Mutation in a putative glycosyltransferase-like gene causes programmed cell death and early leaf senescence in rice

Abstract Leaf senescence is a genetically regulated, highly complex and ordered process. Although it has been extensively studied, the mechanism of leaf senescence is not well understood. In this study, we isolated a rice mutant, designated as premature senescence leaf (psl), which exhibits early se...
Ausführliche Beschreibung

Gespeichert in:

Autor*in:	Ke, Shanwen [verfasserIn] Liu, Shuchun Luan, Xin Xie, Xin-Ming Hsieh, Tzung-Fu Zhang, Xiang-Qian

Format:	E-Artikel
Sprache:	Englisch

Erschienen:	2019

Schlagwörter:	Rice PCD Glycosylation Senescence Ethylene

Anmerkung:	© The Author(s). 2019

Übergeordnetes Werk:	Enthalten in: Rice - New York, NY : Springer New York, 2008, 12(2019), 1 vom: 13. Feb.
Übergeordnetes Werk:	volume:12 ; year:2019 ; number:1 ; day:13 ; month:02

Links:	Volltext

DOI / URN:	10.1186/s12284-019-0266-1

Katalog-ID:	SPR024781819

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520			\|a Abstract Leaf senescence is a genetically regulated, highly complex and ordered process. Although it has been extensively studied, the mechanism of leaf senescence is not well understood. In this study, we isolated a rice mutant, designated as premature senescence leaf (psl), which exhibits early senescence and spontaneous lesion mimic phenotype after flowering. The psl mutant displays programmed cell death with elevated accumulation of reactive oxygen species (ROS). Molecular and genetic analyses revealed that the phenotypes were caused by a phenylalanine deletion in the OsPSL (LOC_Os12g42420) that encode a putative core 2/I branching beta-1,6-N-acetylglucosaminyl transferase predicted to be involved in protein glycosylation modification. OsPSL mRNA levels increased as senescence progressed, with maximum accumulation of transcripts at late senescence stages in WT plants. Moreover, remarkedly down-regulated transcriptional levels of O-linked N-acetylglucosamine (O-GlcNAc) transferases (OGTs) genes were observed in psl mutant, supporting the occurrence of impaired O-glycosylation modification. Proteomic analysis showed that ethylene-related metabolic enzymes including S-adenosyl methionine (SAM) synthetase (SAMS) were significantly upregulated in the psl mutant compared with WT. Consistent with the proteomic results, ethylene concentration is higher in psl mutant than in wild-type plants, and transcript levels of ethylene synthesis and signal transduction genes were induced in psl mutant. The early leaf senescence of psl can be partially rescued by ethylene biosynthesis inhibitor aminoethoxyvinylglycine treatment. These results highlight the importance of protein O-glycosylation in PCD and leaf senescence, and suggest a possible role of OsPSL in ethylene signaling.
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matchkey_str	article:19398433:2019----::uainnpttvgyoytaseaeieeeassrgamdeleta
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allfields	10.1186/s12284-019-0266-1 doi (DE-627)SPR024781819 (SPR)s12284-019-0266-1-e DE-627 ger DE-627 rakwb eng Ke, Shanwen verfasserin aut Mutation in a putative glycosyltransferase-like gene causes programmed cell death and early leaf senescence in rice 2019 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © The Author(s). 2019 Abstract Leaf senescence is a genetically regulated, highly complex and ordered process. Although it has been extensively studied, the mechanism of leaf senescence is not well understood. In this study, we isolated a rice mutant, designated as premature senescence leaf (psl), which exhibits early senescence and spontaneous lesion mimic phenotype after flowering. The psl mutant displays programmed cell death with elevated accumulation of reactive oxygen species (ROS). Molecular and genetic analyses revealed that the phenotypes were caused by a phenylalanine deletion in the OsPSL (LOC_Os12g42420) that encode a putative core 2/I branching beta-1,6-N-acetylglucosaminyl transferase predicted to be involved in protein glycosylation modification. OsPSL mRNA levels increased as senescence progressed, with maximum accumulation of transcripts at late senescence stages in WT plants. Moreover, remarkedly down-regulated transcriptional levels of O-linked N-acetylglucosamine (O-GlcNAc) transferases (OGTs) genes were observed in psl mutant, supporting the occurrence of impaired O-glycosylation modification. Proteomic analysis showed that ethylene-related metabolic enzymes including S-adenosyl methionine (SAM) synthetase (SAMS) were significantly upregulated in the psl mutant compared with WT. Consistent with the proteomic results, ethylene concentration is higher in psl mutant than in wild-type plants, and transcript levels of ethylene synthesis and signal transduction genes were induced in psl mutant. The early leaf senescence of psl can be partially rescued by ethylene biosynthesis inhibitor aminoethoxyvinylglycine treatment. These results highlight the importance of protein O-glycosylation in PCD and leaf senescence, and suggest a possible role of OsPSL in ethylene signaling. Rice (dpeaa)DE-He213 PCD (dpeaa)DE-He213 Glycosylation (dpeaa)DE-He213 Senescence (dpeaa)DE-He213 Ethylene (dpeaa)DE-He213 Liu, Shuchun aut Luan, Xin aut Xie, Xin-Ming aut Hsieh, Tzung-Fu aut Zhang, Xiang-Qian (orcid)0000-0003-1678-2732 aut Enthalten in Rice New York, NY : Springer New York, 2008 12(2019), 1 vom: 13. Feb. (DE-627)582026636 (DE-600)2457103-9 1939-8433 nnns volume:12 year:2019 number:1 day:13 month:02 https://dx.doi.org/10.1186/s12284-019-0266-1 kostenfrei Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER GBV_ILN_20 GBV_ILN_22 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_206 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_602 GBV_ILN_2005 GBV_ILN_2009 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2055 GBV_ILN_2111 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4367 GBV_ILN_4700 AR 12 2019 1 13 02
spelling	10.1186/s12284-019-0266-1 doi (DE-627)SPR024781819 (SPR)s12284-019-0266-1-e DE-627 ger DE-627 rakwb eng Ke, Shanwen verfasserin aut Mutation in a putative glycosyltransferase-like gene causes programmed cell death and early leaf senescence in rice 2019 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © The Author(s). 2019 Abstract Leaf senescence is a genetically regulated, highly complex and ordered process. Although it has been extensively studied, the mechanism of leaf senescence is not well understood. In this study, we isolated a rice mutant, designated as premature senescence leaf (psl), which exhibits early senescence and spontaneous lesion mimic phenotype after flowering. The psl mutant displays programmed cell death with elevated accumulation of reactive oxygen species (ROS). Molecular and genetic analyses revealed that the phenotypes were caused by a phenylalanine deletion in the OsPSL (LOC_Os12g42420) that encode a putative core 2/I branching beta-1,6-N-acetylglucosaminyl transferase predicted to be involved in protein glycosylation modification. OsPSL mRNA levels increased as senescence progressed, with maximum accumulation of transcripts at late senescence stages in WT plants. Moreover, remarkedly down-regulated transcriptional levels of O-linked N-acetylglucosamine (O-GlcNAc) transferases (OGTs) genes were observed in psl mutant, supporting the occurrence of impaired O-glycosylation modification. Proteomic analysis showed that ethylene-related metabolic enzymes including S-adenosyl methionine (SAM) synthetase (SAMS) were significantly upregulated in the psl mutant compared with WT. Consistent with the proteomic results, ethylene concentration is higher in psl mutant than in wild-type plants, and transcript levels of ethylene synthesis and signal transduction genes were induced in psl mutant. The early leaf senescence of psl can be partially rescued by ethylene biosynthesis inhibitor aminoethoxyvinylglycine treatment. These results highlight the importance of protein O-glycosylation in PCD and leaf senescence, and suggest a possible role of OsPSL in ethylene signaling. Rice (dpeaa)DE-He213 PCD (dpeaa)DE-He213 Glycosylation (dpeaa)DE-He213 Senescence (dpeaa)DE-He213 Ethylene (dpeaa)DE-He213 Liu, Shuchun aut Luan, Xin aut Xie, Xin-Ming aut Hsieh, Tzung-Fu aut Zhang, Xiang-Qian (orcid)0000-0003-1678-2732 aut Enthalten in Rice New York, NY : Springer New York, 2008 12(2019), 1 vom: 13. Feb. (DE-627)582026636 (DE-600)2457103-9 1939-8433 nnns volume:12 year:2019 number:1 day:13 month:02 https://dx.doi.org/10.1186/s12284-019-0266-1 kostenfrei Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER GBV_ILN_20 GBV_ILN_22 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_206 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_602 GBV_ILN_2005 GBV_ILN_2009 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2055 GBV_ILN_2111 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4367 GBV_ILN_4700 AR 12 2019 1 13 02
allfields_unstemmed	10.1186/s12284-019-0266-1 doi (DE-627)SPR024781819 (SPR)s12284-019-0266-1-e DE-627 ger DE-627 rakwb eng Ke, Shanwen verfasserin aut Mutation in a putative glycosyltransferase-like gene causes programmed cell death and early leaf senescence in rice 2019 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © The Author(s). 2019 Abstract Leaf senescence is a genetically regulated, highly complex and ordered process. Although it has been extensively studied, the mechanism of leaf senescence is not well understood. In this study, we isolated a rice mutant, designated as premature senescence leaf (psl), which exhibits early senescence and spontaneous lesion mimic phenotype after flowering. The psl mutant displays programmed cell death with elevated accumulation of reactive oxygen species (ROS). Molecular and genetic analyses revealed that the phenotypes were caused by a phenylalanine deletion in the OsPSL (LOC_Os12g42420) that encode a putative core 2/I branching beta-1,6-N-acetylglucosaminyl transferase predicted to be involved in protein glycosylation modification. OsPSL mRNA levels increased as senescence progressed, with maximum accumulation of transcripts at late senescence stages in WT plants. Moreover, remarkedly down-regulated transcriptional levels of O-linked N-acetylglucosamine (O-GlcNAc) transferases (OGTs) genes were observed in psl mutant, supporting the occurrence of impaired O-glycosylation modification. Proteomic analysis showed that ethylene-related metabolic enzymes including S-adenosyl methionine (SAM) synthetase (SAMS) were significantly upregulated in the psl mutant compared with WT. Consistent with the proteomic results, ethylene concentration is higher in psl mutant than in wild-type plants, and transcript levels of ethylene synthesis and signal transduction genes were induced in psl mutant. The early leaf senescence of psl can be partially rescued by ethylene biosynthesis inhibitor aminoethoxyvinylglycine treatment. These results highlight the importance of protein O-glycosylation in PCD and leaf senescence, and suggest a possible role of OsPSL in ethylene signaling. Rice (dpeaa)DE-He213 PCD (dpeaa)DE-He213 Glycosylation (dpeaa)DE-He213 Senescence (dpeaa)DE-He213 Ethylene (dpeaa)DE-He213 Liu, Shuchun aut Luan, Xin aut Xie, Xin-Ming aut Hsieh, Tzung-Fu aut Zhang, Xiang-Qian (orcid)0000-0003-1678-2732 aut Enthalten in Rice New York, NY : Springer New York, 2008 12(2019), 1 vom: 13. Feb. (DE-627)582026636 (DE-600)2457103-9 1939-8433 nnns volume:12 year:2019 number:1 day:13 month:02 https://dx.doi.org/10.1186/s12284-019-0266-1 kostenfrei Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER GBV_ILN_20 GBV_ILN_22 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_206 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_602 GBV_ILN_2005 GBV_ILN_2009 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2055 GBV_ILN_2111 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4367 GBV_ILN_4700 AR 12 2019 1 13 02
allfieldsGer	10.1186/s12284-019-0266-1 doi (DE-627)SPR024781819 (SPR)s12284-019-0266-1-e DE-627 ger DE-627 rakwb eng Ke, Shanwen verfasserin aut Mutation in a putative glycosyltransferase-like gene causes programmed cell death and early leaf senescence in rice 2019 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © The Author(s). 2019 Abstract Leaf senescence is a genetically regulated, highly complex and ordered process. Although it has been extensively studied, the mechanism of leaf senescence is not well understood. In this study, we isolated a rice mutant, designated as premature senescence leaf (psl), which exhibits early senescence and spontaneous lesion mimic phenotype after flowering. The psl mutant displays programmed cell death with elevated accumulation of reactive oxygen species (ROS). Molecular and genetic analyses revealed that the phenotypes were caused by a phenylalanine deletion in the OsPSL (LOC_Os12g42420) that encode a putative core 2/I branching beta-1,6-N-acetylglucosaminyl transferase predicted to be involved in protein glycosylation modification. OsPSL mRNA levels increased as senescence progressed, with maximum accumulation of transcripts at late senescence stages in WT plants. Moreover, remarkedly down-regulated transcriptional levels of O-linked N-acetylglucosamine (O-GlcNAc) transferases (OGTs) genes were observed in psl mutant, supporting the occurrence of impaired O-glycosylation modification. Proteomic analysis showed that ethylene-related metabolic enzymes including S-adenosyl methionine (SAM) synthetase (SAMS) were significantly upregulated in the psl mutant compared with WT. Consistent with the proteomic results, ethylene concentration is higher in psl mutant than in wild-type plants, and transcript levels of ethylene synthesis and signal transduction genes were induced in psl mutant. The early leaf senescence of psl can be partially rescued by ethylene biosynthesis inhibitor aminoethoxyvinylglycine treatment. These results highlight the importance of protein O-glycosylation in PCD and leaf senescence, and suggest a possible role of OsPSL in ethylene signaling. Rice (dpeaa)DE-He213 PCD (dpeaa)DE-He213 Glycosylation (dpeaa)DE-He213 Senescence (dpeaa)DE-He213 Ethylene (dpeaa)DE-He213 Liu, Shuchun aut Luan, Xin aut Xie, Xin-Ming aut Hsieh, Tzung-Fu aut Zhang, Xiang-Qian (orcid)0000-0003-1678-2732 aut Enthalten in Rice New York, NY : Springer New York, 2008 12(2019), 1 vom: 13. Feb. (DE-627)582026636 (DE-600)2457103-9 1939-8433 nnns volume:12 year:2019 number:1 day:13 month:02 https://dx.doi.org/10.1186/s12284-019-0266-1 kostenfrei Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER GBV_ILN_20 GBV_ILN_22 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_206 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_602 GBV_ILN_2005 GBV_ILN_2009 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2055 GBV_ILN_2111 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4367 GBV_ILN_4700 AR 12 2019 1 13 02
allfieldsSound	10.1186/s12284-019-0266-1 doi (DE-627)SPR024781819 (SPR)s12284-019-0266-1-e DE-627 ger DE-627 rakwb eng Ke, Shanwen verfasserin aut Mutation in a putative glycosyltransferase-like gene causes programmed cell death and early leaf senescence in rice 2019 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © The Author(s). 2019 Abstract Leaf senescence is a genetically regulated, highly complex and ordered process. Although it has been extensively studied, the mechanism of leaf senescence is not well understood. In this study, we isolated a rice mutant, designated as premature senescence leaf (psl), which exhibits early senescence and spontaneous lesion mimic phenotype after flowering. The psl mutant displays programmed cell death with elevated accumulation of reactive oxygen species (ROS). Molecular and genetic analyses revealed that the phenotypes were caused by a phenylalanine deletion in the OsPSL (LOC_Os12g42420) that encode a putative core 2/I branching beta-1,6-N-acetylglucosaminyl transferase predicted to be involved in protein glycosylation modification. OsPSL mRNA levels increased as senescence progressed, with maximum accumulation of transcripts at late senescence stages in WT plants. Moreover, remarkedly down-regulated transcriptional levels of O-linked N-acetylglucosamine (O-GlcNAc) transferases (OGTs) genes were observed in psl mutant, supporting the occurrence of impaired O-glycosylation modification. Proteomic analysis showed that ethylene-related metabolic enzymes including S-adenosyl methionine (SAM) synthetase (SAMS) were significantly upregulated in the psl mutant compared with WT. Consistent with the proteomic results, ethylene concentration is higher in psl mutant than in wild-type plants, and transcript levels of ethylene synthesis and signal transduction genes were induced in psl mutant. The early leaf senescence of psl can be partially rescued by ethylene biosynthesis inhibitor aminoethoxyvinylglycine treatment. These results highlight the importance of protein O-glycosylation in PCD and leaf senescence, and suggest a possible role of OsPSL in ethylene signaling. Rice (dpeaa)DE-He213 PCD (dpeaa)DE-He213 Glycosylation (dpeaa)DE-He213 Senescence (dpeaa)DE-He213 Ethylene (dpeaa)DE-He213 Liu, Shuchun aut Luan, Xin aut Xie, Xin-Ming aut Hsieh, Tzung-Fu aut Zhang, Xiang-Qian (orcid)0000-0003-1678-2732 aut Enthalten in Rice New York, NY : Springer New York, 2008 12(2019), 1 vom: 13. Feb. (DE-627)582026636 (DE-600)2457103-9 1939-8433 nnns volume:12 year:2019 number:1 day:13 month:02 https://dx.doi.org/10.1186/s12284-019-0266-1 kostenfrei Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER GBV_ILN_20 GBV_ILN_22 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_206 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_602 GBV_ILN_2005 GBV_ILN_2009 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2055 GBV_ILN_2111 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4367 GBV_ILN_4700 AR 12 2019 1 13 02
language	English
source	Enthalten in Rice 12(2019), 1 vom: 13. Feb. volume:12 year:2019 number:1 day:13 month:02
sourceStr	Enthalten in Rice 12(2019), 1 vom: 13. Feb. volume:12 year:2019 number:1 day:13 month:02
format_phy_str_mv	Article
institution	findex.gbv.de
topic_facet	Rice PCD Glycosylation Senescence Ethylene
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container_title	Rice
authorswithroles_txt_mv	Ke, Shanwen @@aut@@ Liu, Shuchun @@aut@@ Luan, Xin @@aut@@ Xie, Xin-Ming @@aut@@ Hsieh, Tzung-Fu @@aut@@ Zhang, Xiang-Qian @@aut@@
publishDateDaySort_date	2019-02-13T00:00:00Z
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author	Ke, Shanwen
spellingShingle	Ke, Shanwen misc Rice misc PCD misc Glycosylation misc Senescence misc Ethylene Mutation in a putative glycosyltransferase-like gene causes programmed cell death and early leaf senescence in rice
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topic_title	Mutation in a putative glycosyltransferase-like gene causes programmed cell death and early leaf senescence in rice Rice (dpeaa)DE-He213 PCD (dpeaa)DE-He213 Glycosylation (dpeaa)DE-He213 Senescence (dpeaa)DE-He213 Ethylene (dpeaa)DE-He213
topic	misc Rice misc PCD misc Glycosylation misc Senescence misc Ethylene
topic_unstemmed	misc Rice misc PCD misc Glycosylation misc Senescence misc Ethylene
topic_browse	misc Rice misc PCD misc Glycosylation misc Senescence misc Ethylene
format_facet	Elektronische Aufsätze Aufsätze Elektronische Ressource
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title	Mutation in a putative glycosyltransferase-like gene causes programmed cell death and early leaf senescence in rice
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title_full	Mutation in a putative glycosyltransferase-like gene causes programmed cell death and early leaf senescence in rice
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author_browse	Ke, Shanwen Liu, Shuchun Luan, Xin Xie, Xin-Ming Hsieh, Tzung-Fu Zhang, Xiang-Qian
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title_sort	mutation in a putative glycosyltransferase-like gene causes programmed cell death and early leaf senescence in rice
title_auth	Mutation in a putative glycosyltransferase-like gene causes programmed cell death and early leaf senescence in rice
abstract	Abstract Leaf senescence is a genetically regulated, highly complex and ordered process. Although it has been extensively studied, the mechanism of leaf senescence is not well understood. In this study, we isolated a rice mutant, designated as premature senescence leaf (psl), which exhibits early senescence and spontaneous lesion mimic phenotype after flowering. The psl mutant displays programmed cell death with elevated accumulation of reactive oxygen species (ROS). Molecular and genetic analyses revealed that the phenotypes were caused by a phenylalanine deletion in the OsPSL (LOC_Os12g42420) that encode a putative core 2/I branching beta-1,6-N-acetylglucosaminyl transferase predicted to be involved in protein glycosylation modification. OsPSL mRNA levels increased as senescence progressed, with maximum accumulation of transcripts at late senescence stages in WT plants. Moreover, remarkedly down-regulated transcriptional levels of O-linked N-acetylglucosamine (O-GlcNAc) transferases (OGTs) genes were observed in psl mutant, supporting the occurrence of impaired O-glycosylation modification. Proteomic analysis showed that ethylene-related metabolic enzymes including S-adenosyl methionine (SAM) synthetase (SAMS) were significantly upregulated in the psl mutant compared with WT. Consistent with the proteomic results, ethylene concentration is higher in psl mutant than in wild-type plants, and transcript levels of ethylene synthesis and signal transduction genes were induced in psl mutant. The early leaf senescence of psl can be partially rescued by ethylene biosynthesis inhibitor aminoethoxyvinylglycine treatment. These results highlight the importance of protein O-glycosylation in PCD and leaf senescence, and suggest a possible role of OsPSL in ethylene signaling. © The Author(s). 2019
abstractGer	Abstract Leaf senescence is a genetically regulated, highly complex and ordered process. Although it has been extensively studied, the mechanism of leaf senescence is not well understood. In this study, we isolated a rice mutant, designated as premature senescence leaf (psl), which exhibits early senescence and spontaneous lesion mimic phenotype after flowering. The psl mutant displays programmed cell death with elevated accumulation of reactive oxygen species (ROS). Molecular and genetic analyses revealed that the phenotypes were caused by a phenylalanine deletion in the OsPSL (LOC_Os12g42420) that encode a putative core 2/I branching beta-1,6-N-acetylglucosaminyl transferase predicted to be involved in protein glycosylation modification. OsPSL mRNA levels increased as senescence progressed, with maximum accumulation of transcripts at late senescence stages in WT plants. Moreover, remarkedly down-regulated transcriptional levels of O-linked N-acetylglucosamine (O-GlcNAc) transferases (OGTs) genes were observed in psl mutant, supporting the occurrence of impaired O-glycosylation modification. Proteomic analysis showed that ethylene-related metabolic enzymes including S-adenosyl methionine (SAM) synthetase (SAMS) were significantly upregulated in the psl mutant compared with WT. Consistent with the proteomic results, ethylene concentration is higher in psl mutant than in wild-type plants, and transcript levels of ethylene synthesis and signal transduction genes were induced in psl mutant. The early leaf senescence of psl can be partially rescued by ethylene biosynthesis inhibitor aminoethoxyvinylglycine treatment. These results highlight the importance of protein O-glycosylation in PCD and leaf senescence, and suggest a possible role of OsPSL in ethylene signaling. © The Author(s). 2019
abstract_unstemmed	Abstract Leaf senescence is a genetically regulated, highly complex and ordered process. Although it has been extensively studied, the mechanism of leaf senescence is not well understood. In this study, we isolated a rice mutant, designated as premature senescence leaf (psl), which exhibits early senescence and spontaneous lesion mimic phenotype after flowering. The psl mutant displays programmed cell death with elevated accumulation of reactive oxygen species (ROS). Molecular and genetic analyses revealed that the phenotypes were caused by a phenylalanine deletion in the OsPSL (LOC_Os12g42420) that encode a putative core 2/I branching beta-1,6-N-acetylglucosaminyl transferase predicted to be involved in protein glycosylation modification. OsPSL mRNA levels increased as senescence progressed, with maximum accumulation of transcripts at late senescence stages in WT plants. Moreover, remarkedly down-regulated transcriptional levels of O-linked N-acetylglucosamine (O-GlcNAc) transferases (OGTs) genes were observed in psl mutant, supporting the occurrence of impaired O-glycosylation modification. Proteomic analysis showed that ethylene-related metabolic enzymes including S-adenosyl methionine (SAM) synthetase (SAMS) were significantly upregulated in the psl mutant compared with WT. Consistent with the proteomic results, ethylene concentration is higher in psl mutant than in wild-type plants, and transcript levels of ethylene synthesis and signal transduction genes were induced in psl mutant. The early leaf senescence of psl can be partially rescued by ethylene biosynthesis inhibitor aminoethoxyvinylglycine treatment. These results highlight the importance of protein O-glycosylation in PCD and leaf senescence, and suggest a possible role of OsPSL in ethylene signaling. © The Author(s). 2019
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title_short	Mutation in a putative glycosyltransferase-like gene causes programmed cell death and early leaf senescence in rice
url	https://dx.doi.org/10.1186/s12284-019-0266-1
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author2	Liu, Shuchun Luan, Xin Xie, Xin-Ming Hsieh, Tzung-Fu Zhang, Xiang-Qian
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up_date	2024-07-04T02:22:29.177Z
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Moreover, remarkedly down-regulated transcriptional levels of O-linked N-acetylglucosamine (O-GlcNAc) transferases (OGTs) genes were observed in psl mutant, supporting the occurrence of impaired O-glycosylation modification. Proteomic analysis showed that ethylene-related metabolic enzymes including S-adenosyl methionine (SAM) synthetase (SAMS) were significantly upregulated in the psl mutant compared with WT. Consistent with the proteomic results, ethylene concentration is higher in psl mutant than in wild-type plants, and transcript levels of ethylene synthesis and signal transduction genes were induced in psl mutant. The early leaf senescence of psl can be partially rescued by ethylene biosynthesis inhibitor aminoethoxyvinylglycine treatment. 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Mutation in a putative glycosyltransferase-like gene causes programmed cell death and early leaf senescence in rice

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