Excessive UDPG resulting from the mutation of UAP1 causes programmed cell death by triggering reactive oxygen species accumulation and caspase-like activity in rice

© 2017 The Authors. New Phytologist © 2017 New Phytologist Trust.

Bibliographische Detailangaben
Veröffentlicht in:The New phytologist. - 1979. - 217(2018), 1 vom: 13. Jan., Seite 332-343
1. Verfasser: Xiao, Guiqing (VerfasserIn)
Weitere Verfasser: Zhou, Jiahao, Lu, Xiangyang, Huang, Rongfeng, Zhang, Haiwen
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2018
Zugriff auf das übergeordnete Werk:The New phytologist
Schlagworte:Journal Article UDP-N-acetylglucosamine pyrophosphorylase 1 (UAP1) caspase-like activity lesion programmed cell death (PCD) reactive oxygen species (ROS) rice (Oryza sativa) uridine 5′-diphosphoglucoseglucose (UDPG) Plant Proteins Reactive Oxygen Species mehr... Nucleotidyltransferases EC 2.7.7.- UDPacetylglucosamine pyrophosphorylase EC 2.7.7.23 Caspases EC 3.4.22.- Uridine Diphosphate Glucose V50K1D7P4Y
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245 1 0 |a Excessive UDPG resulting from the mutation of UAP1 causes programmed cell death by triggering reactive oxygen species accumulation and caspase-like activity in rice 
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520 |a © 2017 The Authors. New Phytologist © 2017 New Phytologist Trust. 
520 |a Lesion mimic mutants are valuable to unravel the mechanisms governing the programmed cell death (PCD) process. Uridine 5'-diphosphoglucose-glucose (UDPG) functions as a signaling molecule activating multiple pathways in animals, but little is known about its function in plants. Two novel allelic mutants of spl29 with typical PCD characters and reduced pollen viability were obtained by ethane methyl sulfonate mutagenesis in rice cv Kitaake. The enzymatic analyses showed that UDP-N-acetylglucosamine pyrophosphorylase 1 (UAP1) irreversibly catalyzed the decomposition of UDPG. Its activity was severely destroyed and caused excessive UDPG accumulation, with the lesion occurrence associated with the enhanced caspase-like activities in spl29-2. At the transcriptional level, several key genes involved in endoplasmic reticulum stress and the unfolded protein response were abnormally expressed. Moreover, exogenous UDPG could aggravate lesion initiation and development in spl29-2. Importantly, exogenous UDPG and its derivative UDP-N-acetylglucosamine could induce reactive oxygen species (ROS) accumulation and lesion mimics in Kitaake seedlings. These results suggest that the excessive accumulation of UDPG, caused by the mutation of UAP1, was a key biochemical event resulting in the lesion mimics in spl29-2. Thus, our findings revealed that UDPG might be an important component involved in ROS accumulation, PCD execution and lesion mimicking in rice, which also provided new clues for investigating the connection between sugar metabolism and PCD process 
650 4 |a Journal Article 
650 4 |a UDP-N-acetylglucosamine pyrophosphorylase 1 (UAP1) 
650 4 |a caspase-like activity 
650 4 |a lesion 
650 4 |a programmed cell death (PCD) 
650 4 |a reactive oxygen species (ROS) 
650 4 |a rice (Oryza sativa) 
650 4 |a uridine 5′-diphosphoglucoseglucose (UDPG) 
650 7 |a Plant Proteins  |2 NLM 
650 7 |a Reactive Oxygen Species  |2 NLM 
650 7 |a Nucleotidyltransferases  |2 NLM 
650 7 |a EC 2.7.7.-  |2 NLM 
650 7 |a UDPacetylglucosamine pyrophosphorylase  |2 NLM 
650 7 |a EC 2.7.7.23  |2 NLM 
650 7 |a Caspases  |2 NLM 
650 7 |a EC 3.4.22.-  |2 NLM 
650 7 |a Uridine Diphosphate Glucose  |2 NLM 
650 7 |a V50K1D7P4Y  |2 NLM 
700 1 |a Zhou, Jiahao  |e verfasserin  |4 aut 
700 1 |a Lu, Xiangyang  |e verfasserin  |4 aut 
700 1 |a Huang, Rongfeng  |e verfasserin  |4 aut 
700 1 |a Zhang, Haiwen  |e verfasserin  |4 aut 
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773 1 8 |g volume:217  |g year:2018  |g number:1  |g day:13  |g month:01  |g pages:332-343 
856 4 0 |u http://dx.doi.org/10.1111/nph.14818  |3 Volltext 
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