scholarly journals The ER luminal binding protein (BiP) mediates an increase in drought tolerance in soybean and delays drought-induced leaf senescence in soybean and tobacco

2008 ◽  
Vol 60 (2) ◽  
pp. 533-546 ◽  
Author(s):  
Maria Anete S. Valente ◽  
Jerusa A. Q. A. Faria ◽  
Juliana R. L. Soares-Ramos ◽  
Pedro A. B. Reis ◽  
Guilherme L. Pinheiro ◽  
...  
Keyword(s):  
Drought Tolerance ◽  
Leaf Senescence ◽  
Binding Protein

Roles of potential plant hormones and transcription factors in controlling leaf senescence and drought tolerance

PROTOPLASMA ◽  
2018 ◽  
Vol 256 (2) ◽  
pp. 313-329 ◽  
Author(s):  
Sumira Jan ◽  
Nazia Abbas ◽  
Muhammad Ashraf ◽  
Parvaiz Ahmad
Keyword(s):  
Transcription Factors ◽  
Drought Tolerance ◽  
Leaf Senescence ◽  
Plant Hormones

scholarly journals GmNAC81 Inversely Modulates Leaf Senescence and Drought Tolerance

2020 ◽  
Vol 11 ◽  
Author(s):  
Dalton O. Ferreira ◽  
Otto T. Fraga ◽  
Maiana R. Pimenta ◽  
Hanna D. N. Caetano ◽  
João Paulo B. Machado ◽  
...  
Keyword(s):  
Cell Death ◽  
Drought Tolerance ◽  
Leaf Senescence ◽  
Control Line ◽  
Aba Signaling ◽  
Downstream Effector ◽  
Relative Water ◽  
Cell Death Program ◽  
Transgenic Lines ◽  
Increased Sensitivity

Glycine max NAC81 (GmNAC81) is a downstream effector of the DCD/NRP-mediated cell death signaling, which interacts with GmNAC30 to fully induce the caspase 1-like vacuolar processing enzyme (VPE) expression, the executioner of the cell death program. GmNAC81 has been previously shown to positively modulate leaf senescence via the NRP/GmNAC81/VPE signaling module. Here, we examined the transcriptome induced by GmNAC81 overexpression and leaf senescence and showed that GmNAC81 further modulates leaf senescence by regulating an extensive repertoire of functionally characterized senescence-associated genes (SAGs). Because the NRP/GmNAC81/VPE signaling circuit also relays stress-induced cell death signals, we examined the effect of GmNAC81 overexpression in drought responses. Enhanced GmNAC81 expression in the transgenic lines increased sensitivity to water deprivation. Under progressive drought, the GmNAC81-overexpressing lines displayed severe leaf wilting, a larger and faster decline in leaf Ψw, relative water content (RWC), photosynthesis rate, stomatal conductance, and transpiration rate, in addition to higher Ci/Ca and lower Fm/Fv ratios compared to the BR16 control line. Collectively, these results indicate that the photosynthetic activity and apparatus were more affected by drought in the transgenic lines. Consistent with hypersensitivity to drought, chlorophyll loss, and lipid peroxidation were higher in the GmNAC81-overexpressing lines than in BR16 under dehydration. In addition to inducing VPE expression, GmNAC81 overexpression uncovered the regulation of typical drought-responsive genes. In particular, key regulators and effectors of ABA signaling were suppressed by GmNAC81 overexpression. These results suggest that GmNAC81 may negatively control drought tolerance not only via VPE activation but also via suppression of ABA signaling.

scholarly journals Overexpression of a LAM domain containing RNA-binding protein LARP1c induces precocious leaf senescence in Arabidopsis

2012 ◽  
Vol 34 (4) ◽  
pp. 367-374 ◽  
Author(s):  
Bangyue Zhang ◽  
Jianheng Jia ◽  
Min Yang ◽  
Chunxia Yan ◽  
Yuzhen Han
Keyword(s):  
Leaf Senescence ◽  
Rna Binding ◽  
Binding Protein ◽  
Rna Binding Protein

scholarly journals Acceleration of leaf senescence is slowed down in transgenic barley plants deficient in the DNA/RNA-binding protein WHIRLY1

2017 ◽  
Vol 68 (5) ◽  
pp. 983-996 ◽  
Author(s):  
Weronika Kucharewicz ◽  
Assaf Distelfeld ◽  
Wolfgang Bilger ◽  
Maren Müller ◽  
Sergi Munné-Bosch ◽  
...  
Keyword(s):  
Leaf Senescence ◽  
Rna Binding ◽  
Binding Protein ◽  
Rna Binding Protein ◽  
Transgenic Barley

scholarly journals Overexpression of Arabidopsis acyl-CoA-binding protein ACBP2 enhances drought tolerance

2012 ◽  
Vol 36 (2) ◽  
pp. 300-314 ◽  
Author(s):  
ZHI-YAN DU ◽  
MO-XIAN CHEN ◽  
QIN-FANG CHEN ◽  
SHI XIAO ◽  
MEE-LEN CHYE
Keyword(s):  
Drought Tolerance ◽  
Binding Protein

scholarly journals Delayed leaf senescence induces extreme drought tolerance in a flowering plant

2007 ◽  
Vol 104 (49) ◽  
pp. 19631-19636 ◽  
Author(s):  
R. M. Rivero ◽  
M. Kojima ◽  
A. Gepstein ◽  
H. Sakakibara ◽  
R. Mittler ◽  
...  
Keyword(s):  
Drought Tolerance ◽  
Leaf Senescence ◽  
Extreme Drought ◽  
Flowering Plant
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