Genome-wide identification and analysis of the HD-Zip transcription factors in perennial ryegrass highlight LpHOX22 and LpHOX24 as negative regulators of osmotic and heat stresses

Yang, Di; Zhang, Zhewei; Fang, Zhengfu; Wang, Weiliang; Wu, Simin; Sun, Tianxiao; Wang, Yanping; Xiang, Lin; Luo, Hong; Chan, Zhulong

doi:10.1016/j.envexpbot.2024.105854

Environmental and Experimental Botany

2024

DOI: 10.1016/j.envexpbot.2024.105854

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Genome-wide identification and analysis of the HD-Zip transcription factors in perennial ryegrass highlight LpHOX22 and LpHOX24 as negative regulators of osmotic and heat stresses

Di Yang,

Zhewei Zhang,

Zhengfu Fang

et al.

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Genome‐Wide Analysis of the Phospholipase Ds in Perennial Ryegrass Highlights LpABFs‐LpPLDδ3 Cascade Modulated Osmotic and Heat Stress Responses

Yang,

Wang,

Fang

et al. 2024

Plant Cell & Environment

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The phospholipase Ds (PLDs) are crucial for cellular signalling and play roles in plant abiotic stress response. In this study, we identified 12 PLD genes from the genome data of perennial ryegrass (Lolium perenne), which is widely used as forage and turfgrass. Among them, LpPLDδ3 was significantly repressed by ABA treatment, and induced by drought stress and heat stress treatments. The ectopic overexpression (OE) of LpPLDδ3 in Arabidopsis enhanced plant tolerance to osmotic and heat stress as demonstrated by an increased survival rate and reduced malondialdehyde (MDA) accumulation and electrolyte leakage (EL). Arabidopsis endogenous ABA RESPONSIVE ELEMENT BINDING FACTORs (ABFs) and heat stress responsive genes were elevated in LpPLDδ3 OE lines under osmotic and heat stress treatments. Additionally, overexpression of LpPLDδ3 in perennial ryegrass protoplasts could increase heat stress tolerance and elevate expression level of heat stress responsive genes. Moreover, LpABF2 and LpABF4 depressed the LpPLDδ3 expression by directly binding to its ABRE core‐binding motif of promoter region. In summary, LpPLDδ3 was repressed by LpABF2 and LpABF4 and positively involved in perennial ryegrass osmotic and heat stress responses.

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Genome‐Wide Analysis of the Phospholipase Ds in Perennial Ryegrass Highlights LpABFs‐LpPLDδ3 Cascade Modulated Osmotic and Heat Stress Responses

Yang,

Wang,

Fang

et al. 2024

Plant Cell & Environment

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show abstract

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Genome-wide identification and analysis of the HD-Zip transcription factors in perennial ryegrass highlight LpHOX22 and LpHOX24 as negative regulators of osmotic and heat stresses

Cited by 1 publication

References 63 publications

Genome‐Wide Analysis of the Phospholipase Ds in Perennial Ryegrass Highlights LpABFs‐LpPLDδ3 Cascade Modulated Osmotic and Heat Stress Responses

Genome‐Wide Analysis of the Phospholipase Ds in Perennial Ryegrass Highlights LpABFs‐LpPLDδ3 Cascade Modulated Osmotic and Heat Stress Responses

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