Advances in plant oxygen sensing: endogenous and exogenous mechanisms DOI Creative Commons

Zhen Yan,

Sheng Yang,

Lin Chen

et al.

Journal of genetics and genomics/Journal of Genetics and Genomics, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 1, 2024

Oxygen is essential for the biochemical processes that sustain life in eukaryotic organisms. Although plants produce oxygen through photosynthesis, they often struggle to survive low-oxygen environments, such as during flooding or submergence. To endure these conditions, must reprogram their developmental and metabolic networks, adaptation process involves continuous detection of both exogenous hypoxic signals endogenous gradients. Recent research has significantly advanced our understanding how respond hypoxia signals. In this review, we explore advancements areas, comparing them responses animals, with a primary focus on perceive particularly those caused by submergence, well signaling pathways different crops. Additionally, discuss interplay between plants. Finally, future directions aimed at improving crop resilience integrating perception Through efforts, aspire contribute development varieties are not only highly resistant but also experience minimal growth yield penalties, thereby making substantial contributions agricultural science.

Language: Английский

Survival mechanisms of plants under hypoxic stress: Physiological acclimation and molecular regulation DOI Open Access

Lin‐Na Wang,

Weicheng Wang,

Ke Liao

et al.

Journal of Integrative Plant Biology, Journal Year: 2025, Volume and Issue: unknown

Published: March 7, 2025

Hypoxia (low-oxygen tension) caused by complete submergence or waterlogging is an abiotic stress factor that severely affects the yield and distribution of plants. To adapt to survive under hypoxic conditions, plants employ several physiological molecular strategies integrate morphological acclimation, metabolic shifts, signaling networks. Group VII ETHYLENE RESPONSE FACTORS (ERF-VIIs), master transcription factors, have emerged as a hub for regulating plant hypoxia sensing signaling. Several mitogen-activated protein kinases calcium-dependent recently been reported be involved in potentiating via interaction with phosphorylation ERF-VIIs. Here, we provide overview current knowledge on regulatory network ERF-VIIs their post-translational regulation determining responses reoxygenation, primary focus recent advancements understanding how molecules, including ethylene, long-chain acyl-CoA, phosphatidic acid, nitric oxide, are ERV-VII activities. Furthermore, propose future directions investigating intricate crosstalk between growth resilience, which central guiding breeding agricultural management promoting flooding tolerance

Language: Английский

Citations

1
Cytosolic Monodehydroascorbate Reductase 2 Promotes Oxidative Stress Signaling in Arabidopsis DOI Open Access
Dongdong Xu, Lug Trémulot, Zheng Yang

et al.

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

Published: March 26, 2025

The antioxidative enzyme monodehydroascorbate reductase (MDHAR) is represented by five genes in Arabidopsis, including four that encode cytosolic and peroxisomal proteins. planta importance of these specific isoforms during oxidative stress remain to be characterised. T-DNA mutants for MDAR encoding were studied. To examine their roles conditions intracellular stress, crossed with a cat2 line lacking the major leaf catalase. Enzyme assays mdar recombinant MDHARs suggest MDHAR1 MDHAR2 are players NADH- NADPH-dependent activities, respectively. All showed wild-type phenotype when grown standard conditions. In background, loss MDHAR functions decreased growth whereas function had no effect on but annulled large part transcriptomic phenotypic responses stress. effects mdar2 mutation included salicylic acid accumulation enhanced glutathione oxidation, reverted complementation MDAR2 sequence. Together, data show dispensable optimal essential promote biotic defence triggered

Language: Английский

Citations

0
Overexpression of the GmERF071 gene confers resistance to soybean cyst nematode in soybean DOI Creative Commons
Erhui Xiong, Jiaqi Xu,

Pingzhang Feng

et al.

The Plant Genome, Journal Year: 2025, Volume and Issue: 18(2)

Published: April 29, 2025

Abstract Soybean cyst nematode (SCN) is one of the most harmful pests, causing major reductions in soybean yield globally. The validation and functional characterization SCN resistance genes are crucial to improving worldwide. Herein, we describe an gene, GmERF071 ( Glyma.19g262700 ). a hydrophilic, unstable protein with AP2/ERF subfamily ethylene response transcription factor domain, which localized nucleus. Overexpression enhanced stable genetic transformation root systems. RNA‐seq analysis revealed 394 upregulated 132 downregulated differentially expressed (DEGs) overexpression transgenic plants. DEGs participated plant‐pathogen interactions, mitogen‐activated kinase signaling, plant hormone signal transduction, chitin, carbohydrates, wounding starch sucrose metabolism, phenylpropionic acid biosynthesis, flavonoid biosynthesis. Nine candidate were verified using real‐time quantitative reverse PCR. These results suggest that plays key role could be used genomics‐assisted breeding develop varieties increased SCN.

Language: Английский

Citations

0
Environmental genome-wide association studies across precipitation regimes reveal that the E3 ubiquitin ligase MBR1 regulates plant adaptation to rainy environments DOI Creative Commons
Simone Castellana, Paolo M. Triozzi, Matteo Dell’Acqua

et al.

Plant Communications, Journal Year: 2024, Volume and Issue: 5(12), P. 101074 - 101074

Published: Aug. 31, 2024

In an era characterized by rapidly changing and less-predictable weather conditions fueled the climate crisis, understanding mechanisms underlying local adaptation in plants is of paramount importance for conservation species. As frequency intensity extreme precipitation events increase, so are flooding resulting from soil water saturation. The subsequent onset hypoxic stress one leading causes crop damage yield loss. By combining genomics remote sensing data, it now possible to probe natural plant populations that have evolved different rainfall regimes look molecular hypoxia. Here, using environmental genome-wide association study (eGWAS) 934 non-redundant georeferenced Arabidopsis ecotypes, we identified functional variants gene MED25 BINDING RING-H2 PROTEIN 1 (MBR1). This encodes a ubiquitin-protein ligase regulates MEDIATOR25 (MED25), part multiprotein complex interacts with transcription factors act as key drivers response Arabidopsis, namely RELATED TO AP2 proteins RAP2.2 RAP2.12. Through experimental validation, show MBR1 effects on stability and, turn, hypoxia tolerance. also highlights pivotal role MBR1/MED25 module establishing comprehensive response. Our findings candidates can be effectively mined large datasets. thus supports need integration forward reverse genetics robust physiology validation outcomes.

Language: Английский

Citations

1
A mechanistic integration of hypoxia signaling with energy, redox and hormonal cues DOI Creative Commons

Tilo Renziehausen,

R. Chaudhury,

Sjon Hartman

et al.

PLANT PHYSIOLOGY, Journal Year: 2024, Volume and Issue: unknown

Published: Nov. 12, 2024

Abstract Oxygen deficiency (hypoxia) occurs naturally in many developing plant tissues but can become a major threat during acute flooding stress. Consequently, plants as aerobic organisms must rapidly acclimate to hypoxia and the associated energy crisis ensure cellular ultimately organismal survival. In plants, oxygen sensing is tightly linked with oxygen-controlled protein stability of group VII ETHYLENE-RESPONSE FACTORs (ERFVII), which, when stabilized under hypoxia, act key transcriptional regulators hypoxia-responsive genes (HRGs). Multiple signaling pathways feed into fine-tune decision-making First, ATP shortage upon directly affects status adjusts anaerobic metabolism. Secondly, altered redox homeostasis leads reactive nitrogen species (ROS RNS) accumulation, evoking oxidative stress acclimation. Finally, phytohormone ethylene promotes improve acclimation, while turn alter ethylene, auxin, abscisic acid, salicylic jasmonate guide development responses. this Update, we summarize current knowledge on how energy, redox, hormone are induced subsequently integrated at molecular level stress-tailored We show that some HRGs responsive changes independently status, propose an updated HRG list more representative for marker gene expression. discuss synergistic effects their phenotypic consequences context both environmental developmental hypoxia.

Language: Английский

Citations

0
Advances in plant oxygen sensing: endogenous and exogenous mechanisms DOI Creative Commons

Zhen Yan,

Sheng Yang,

Lin Chen

et al.

Journal of genetics and genomics/Journal of Genetics and Genomics, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 1, 2024

Oxygen is essential for the biochemical processes that sustain life in eukaryotic organisms. Although plants produce oxygen through photosynthesis, they often struggle to survive low-oxygen environments, such as during flooding or submergence. To endure these conditions, must reprogram their developmental and metabolic networks, adaptation process involves continuous detection of both exogenous hypoxic signals endogenous gradients. Recent research has significantly advanced our understanding how respond hypoxia signals. In this review, we explore advancements areas, comparing them responses animals, with a primary focus on perceive particularly those caused by submergence, well signaling pathways different crops. Additionally, discuss interplay between plants. Finally, future directions aimed at improving crop resilience integrating perception Through efforts, aspire contribute development varieties are not only highly resistant but also experience minimal growth yield penalties, thereby making substantial contributions agricultural science.

Language: Английский

Citations

0