气候变化领域集成服务门户(CCPortal): Genotype-specific germination behavior induced by sustainable priming techniques in response to water deprivation stress in rice

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DOI	10.3389/fpls.2024.1344383
	Genotype-specific germination behavior induced by sustainable priming techniques in response to water deprivation stress in rice
	Duenas Jr, Conrado; Pagano, Andrea; Calvio, Cinzia; Srikanthan, Dhanush Srikanth; Slamet-Loedin, Inez; Balestrazzi, Alma; Macovei, Anca
发表日期	2024
ISSN	1664-462X
起始页码	15
卷号	15
英文摘要	Water stress brought about by climate change is among the major global concerns threatening food security. Rice is an important staple food which requires high water resources. Being a semi-aquatic plant, rice is particularly susceptible to drought. The aim of this work was to develop techniques directed to promote rice resilience to water deprivation stress during germination by implementing specific seed priming treatments. Five popular Italian rice varieties were subjected to priming treatments using novel, sustainable solutions, like poly-gamma-glutamic acid (gamma-PGA), denatured gamma-PGA (dPGA), and iron (Fe) pulsing, alone or in combination. The effect of the developed priming methods was tested under optimal conditions as well as under water deprivation stress imposed by polyethylene glycol (PEG) treatments. The priming efficacy was phenotypically determined in terms of germination behavior by measuring a series of parameters (germinability, germination index, mean germination time, seed vigor index, root and shoot length, germination stress tolerance index). Biochemical analyses were carried out to measure the levels of iron uptake and accumulation of reactive oxygen species (ROS). Integrative data analyses revealed that the rice varieties exhibited a strong genotype- and treatment-specific germination behavior. PEG strongly inhibited germination while most of the priming treatments were able to rescue it in all varieties tested except for Unico, which can be defined as highly stress sensitive. Molecular events (DNA repair, antioxidant response, iron homeostasis) associated with the transition from seed to seedling were monitored in terms of changes in gene expression profiles in two varieties sensitive to water deprivation stress with different responses to priming. The investigated genes appeared to be differentially expressed in a genotype-, priming treatment-, stress- and stage-dependent manner. The proposed seed priming treatments can be envisioned as sustainable and versatile agricultural practices that could help in addressing the impact of climate challenges on the agri-food system.
英文关键词	poly-gamma glutamic acid (gamma-PGA); polyethylene glycol (PEG); iron pulsing; seed germination; gene expression; antioxidant response; DNA damage response
语种	英语
WOS研究方向	Plant Sciences
WOS类目	Plant Sciences
WOS记录号	WOS:001168256300001
来源期刊	FRONTIERS IN PLANT SCIENCE
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/303762
作者单位	University of Pavia; CGIAR; International Rice Research Institute (IRRI)
推荐引用方式 GB/T 7714	Duenas Jr, Conrado,Pagano, Andrea,Calvio, Cinzia,et al. Genotype-specific germination behavior induced by sustainable priming techniques in response to water deprivation stress in rice[J],2024,15.
APA	Duenas Jr, Conrado.,Pagano, Andrea.,Calvio, Cinzia.,Srikanthan, Dhanush Srikanth.,Slamet-Loedin, Inez.,...&Macovei, Anca.(2024).Genotype-specific germination behavior induced by sustainable priming techniques in response to water deprivation stress in rice.FRONTIERS IN PLANT SCIENCE,15.
MLA	Duenas Jr, Conrado,et al."Genotype-specific germination behavior induced by sustainable priming techniques in response to water deprivation stress in rice".FRONTIERS IN PLANT SCIENCE 15(2024).