Identification and functional characterization of the MYB transcription factor GmMYBLJ in soybean leaf senescence

Frontiers in Plant Science, Journal Year: 2025, Volume and Issue: 16

Published: Jan. 24, 2025

Leaf senescence is an important agronomic trait that significantly influences the quality and yield of soybeans. v-Myb avian myeloblastosis viral oncogene homolog (MYB) transcription factors are considered crucial regulators governing leaf senescence, which can be utilized to improve traits in crops. However, our knowledge regarding functional roles soybean MYBs extremely limited. In this study, GmMYBLJ , a CCA1-like MYB was identified functionally characterized with respect senescence. The protein localized nucleus, high accumulation its transcripts observed nodules embryos. Notably, highly expressed senescent leaves transcriptionally induced by dark or NaCl treatment, as confirmed histochemical GUS staining analysis. Ectopic overexpression Arabidopsis not only led earlier reduced chlorophyll content, increased MDA but also promoted expression several WRKY family senescence-associated genes, such SAG12 ORE1 . Further investigation showed accelerated under darkness response Pst DC3000 infection. Moreover, transgenic plants overexpressing grew faster exhibited salt stress. DAB analysis ROS hairy roots leaves. Collectively, results provided useful information into both age-dependent stress-induced

Language: Английский

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Humic acids modify root architecture in Arabidopsis through H+-ATPase-dependent target of rapamycin activation in concert with Ca2+ and ROS signaling

Chemical and Biological Technologies in Agriculture, Journal Year: 2025, Volume and Issue: 12(1)

Published: April 10, 2025

Language: Английский

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A CLE14 Signalling Cascade Promotes Arabidopsis Root Hair Elongation

Plant Cell & Environment, Journal Year: 2025, Volume and Issue: unknown

Published: May 7, 2025

ABSTRACT The CLAVATA3 (CLV3)/EMBRYO SURROUNDING REGION‐RELATED(CLE) peptides play crucial roles in plentiful plant developmental and adaptive processes. In this study, we demonstrate that Arabidopsis CLE14 acts as a critical regulator of root hair elongation. Compared to the wild‐type (WT) plant, CRISPR/Cas9‐generated cle14‐cr mutants exhibit reduced length, whereas overexpression promotes consistence, synthetic peptide also facilitates However, peptide‐induced elongation is significantly compromised clv2 crn mutants, suggesting requirement CLV2 CRN proteins CLE14‐mediated growth. Genetic pharmacological evidence further indicates ethylene downstream CLE14‐CLV2/CRN module regulate Additionally, upregulates expression level RHD6 RSL4 via EIN3 EIL1, key transcription factors signalling. Subsequently, trigger hydrogen peroxide (H 2 O ) nitric oxide (NO) accumulation by upregulating H NO biosynthesis‐related genes, ultimately driving Collectively, our findings elucidate signalling components underlying

Language: Английский

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Mapping the redox regulatory landscape: a bit of history and a look to the future

Journal of Experimental Botany, Journal Year: 2024, Volume and Issue: 75(15), P. 4453 - 4458

Published: Aug. 12, 2024

Language: Английский

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