scholarly journals Characterization of BRS1 Functions in Plant Stress Responses

2020 ◽  
Author(s):  
Dongzhi Zhang ◽  
Peng Zhao ◽  
Shengbao Xu
Keyword(s):  
Stress Responses ◽  
Redox Regulation ◽  
Plant Stress ◽  
Serine Carboxypeptidase ◽  
Biotic And Abiotic Stress ◽  
Brassinosteroid Signaling ◽  
Plant Stress Responses ◽  
Precise Role

Abstract Background: Brassinosteroid-insensitive 1 suppressor 1 (BRS1), is a serine carboxypeptidase that mediates brassinosteroid signaling and participates in multiple developmental processes in Arabidopsis. However, little is known about the precise role of BRS1 in this context. Results: In this study, we analyzed transcriptional and proteomic profiles of Arabidopsis seedlings overexpressing BRS1 and found that this gene is involved in both biotic and abiotic stress responses and redox regulation. Further proteomic evidence shows that BRS1 regulates cell redox by indirectly interacting with cytosolic NADP+-dependent isocitrate dehydrogenase (cICDH). We identified two novel splice products of BRS1, which might play important roles in development and stress responses in plants. Conclusions: This study highlights the role of BRS1 in plant redox regulation and stress responses, which extends our understanding of extracellular serine carboxypeptidases.

BRS1 mediates plant redox regulation and cold responses

2021 ◽  
Author(s):  
Dongzhi Zhang ◽  
Yuqian Zhao ◽  
Junzhe Wang ◽  
Peng Zhao ◽  
Shengbao Xu
Keyword(s):  
Cold Stress ◽  
Stress Responses ◽  
Isocitrate Dehydrogenase ◽  
Redox Regulation ◽  
Serine Carboxypeptidase ◽  
Developmental Processes ◽  
Brassinosteroid Signaling ◽  
Cold Responses ◽  
Precise Role

Abstract Background: Brassinosteroid-insensitive 1 suppressor 1 (BRS1), is a serine carboxypeptidase that mediates brassinosteroid signaling and participates in multiple developmental processes in Arabidopsis. However, little is known about the precise role of BRS1 in this context. Results: In this study, we analyzed transcriptional and proteomic profiles of Arabidopsis seedlings overexpressing BRS1 and found that this gene is involved in both cold stress responses and redox regulation. Further proteomic evidence shows that BRS1 regulates cell redox by indirectly interacting with cytosolic NADP+-dependent isocitrate dehydrogenase (cICDH). We identified two novel splice products of BRS1, which might play important roles in development and stress responses in plants. Conclusions: This study highlights the role of BRS1 in plant redox regulation and stress responses, which extends our understanding of extracellular serine carboxypeptidases.

scholarly journals BRS1 mediates plant redox regulation and cold responses

2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Dongzhi Zhang ◽  
Yuqian Zhao ◽  
Junzhe Wang ◽  
Peng Zhao ◽  
Shengbao Xu
Keyword(s):  
Stress Responses ◽  
Redox Regulation ◽  
Splice Form ◽  
Alternative Splice Form ◽  
Serine Carboxypeptidase ◽  
Over Expression ◽  
Brassinosteroid Signaling ◽  
Cold Responses ◽  
Precise Role

Abstract Background Brassinosteroid-insensitive 1 suppressor 1 (BRS1) is a serine carboxypeptidase that mediates brassinosteroid signaling and participates in multiple developmental processes in Arabidopsis. However, little is known about the precise role of BRS1 in this context. Results In this study, we analyzed transcriptional and proteomic profiles of Arabidopsis seedlings overexpressing BRS1 and found that this gene was involved in both cold stress responses and redox regulation. Further proteomic evidence showed that BRS1 regulated cell redox by indirectly interacting with cytosolic NADP + -dependent isocitrate dehydrogenase (cICDH). One novel alternative splice form of BRS1 was identified in over-expression mutants brs1-1D, which may confer a new role in plant development and stress responses. Conclusions This study highlights the role of BRS1 in plant redox regulation and stress responses, which extends our understanding of extracellular serine carboxypeptidases.

scholarly journals Electrical characterization of the root system: a noninvasive approach to study plant stress responses

2019 ◽  
Vol 41 (10) ◽  
Author(s):  
Imre Cseresnyés ◽  
Tünde Takács ◽  
Bettina Sepovics ◽  
Ramóna Kovács ◽  
Anna Füzy ◽  
...  
Keyword(s):  
Root System ◽  
Stress Responses ◽  
Plant Stress ◽  
Electrical Characterization ◽  
System A ◽  
Plant Stress Responses

scholarly journals Involvement of Arginase in Methyl Jasmonate–induced Tomato Fruit Chilling Tolerance

2016 ◽  
Vol 141 (2) ◽  
pp. 139-145 ◽  
Author(s):  
Xinhua Zhang ◽  
Fujun Li ◽  
Nana Ji ◽  
Shujun Shao ◽  
Dongyang Wang ◽  
...  
Keyword(s):  
Methyl Jasmonate ◽  
Stress Responses ◽  
Tomato Fruit ◽  
Chilling Injury ◽  
Plant Stress ◽  
Physiological Role ◽  
Chilling Tolerance ◽  
Antioxidant Enzyme System ◽  
Plant Stress Responses

The physiological role of arginase in nitrogen remobilization processes from protein degradation during seed germination has well been described in several species. However, very little is known about its possible roles in plant stress responses. Treatment of tomato fruit (Solanum lycopersicum L.) with 0.05 mm methyl jasmonate (MeJA) enhanced transcription levels of arginase genes, especially LeARG2. Chilling injury (CI) of fruit treated with 0.05 mm MeJA for 12 hours was also effectively alleviated, as manifested by decreases in CI index, electrolyte leakage, and malondialdehyde (MDA) content. To investigate the potential role of arginase in MeJA-induced chilling tolerance, fruit were treated with MeJA or the arginase inhibitor Nω-hydroxy-nor-l-arginine (nor-NOHA) combined with MeJA and then stored at 2 °C for 28 days. MeJA-induced arginase activity was strongly inhibited and the reduction of CI by MeJA was nearly abolished by the inhibitor. In addition, MeJA treatment increased the activities of superoxide dismutase (SOD), catalase (CAT), and ascorbate peroxidase (APX); inhibited peroxidase (POD) activities; and promoted proline and polyamines accumulation. These effects were partially counteracted by nor-NOHA; putrescine accumulation, however, was unaffected by the inhibitor. Our results indicate that arginase may be involved in MeJA-induced chilling tolerance, possibly by ameliorating the antioxidant enzyme system of fruit and increasing proline levels.

The role of miR398 in plant stress responses

2010 ◽  
Vol 32 (2) ◽  
pp. 129-134 ◽  
Author(s):  
Yan-Fei DING ◽  
Guang-Yue WANG ◽  
Ya-Ping FU ◽  
Cheng ZHU
Keyword(s):  
Stress Responses ◽  
Plant Stress ◽  
Plant Stress Responses

scholarly journals Relationship of Melatonin and Salicylic Acid in Biotic/Abiotic Plant Stress Responses

Agronomy ◽  
2018 ◽  
Vol 8 (4) ◽  
pp. 33 ◽  
Author(s):  
Josefa Hernández-Ruiz ◽  
Marino Arnao
Keyword(s):  
Salicylic Acid ◽  
Stress Responses ◽  
Plant Stress ◽  
Point Of View ◽  
Biotic And Abiotic Stress ◽  
Common Precursor ◽  
Relevant Role ◽  
Plant Stress Responses ◽  
Action Model ◽  
Relationship Of

Melatonin (N-acetyl-5-methoxytryptamine) was discovered in plants in 1995, while salicylic acid was the name given to the active ingredient of willow in 1838. From a physiological point of view, these two molecules present in plants have never been compared, even though they have a great number of similarities, as we shall see in this work. Both molecules have biosynthesis pathways that share a common precursor and both play a relevant role in the physiology of plants, especially in aspects related to biotic and abiotic stress. They have also been described as biostimulants of photosynthetic processes and productivity enhancers in agricultural crops. We review the coincident aspects of both molecules, and propose an action model, by which the relationship between these molecules and other agents and plant hormones can be studied.

scholarly journals The role of retrograde signals during plant stress responses

2017 ◽  
Vol 69 (11) ◽  
pp. 2783-2795 ◽  
Author(s):  
Tim Crawford ◽  
Nóra Lehotai ◽  
Åsa Strand
Keyword(s):  
Stress Responses ◽  
Plant Stress ◽  
Plant Stress Responses
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