Supporting crop plant resilience during climate change

Yuan, Yuxuan; Ton, Bao Linh; Thomas, William J. W.; Batley, Jacqueline; Edwards, David

doi:10.1002/csc2.21019

Cited by 5 publications

(1 citation statement)

References 158 publications

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“…Priming, achieved through pre-exposure of plants to an elicitor or mild stress, induces a stress memory in plants and prepares them to be more effective in responding to subsequent stress events (Yuan, et al 2023). Priming is a promising strategy to enhance crop tolerance to different abiotic and biotic stress under climate change (Awaad and Awaad 2022;Cotrina Cabello, et al 2023).…”

Section: )mentioning

confidence: 99%

ABA-responsive small RNAs contribute to drought stress memory by regulating antioxidant activity and lignification

Khoshniat,

Rafudeen,

Seifi

2023

Preprint

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Previously we showed that a single exogenous application of Abscisic acid (ABA) on Arabidopsis in early developmental stages results in enhanced plant biomass and drought tolerance in the adult plants. Here we tested the hypothesis that small RNAs (sRNAs), including micro RNAs (miRNAs) and small interfering RNAs (siRNAs), contribute to the observed ABA effects. We sequenced sRNA populations in Arabidopsis plants that were sprayed with ABA or water at the cotyledonary stage at two time-points, 4 hours and 14 days after spraying. Analyses of the sRNAs revealed that at 4 hours, four miRNA families, miR408, miR398, miR397, and miR393, were significantly down-regulated by the ABA application. These miRNAs are all copper-induced miRNAs, which are known to be involved in the regulation of antioxidant enzymes and lignification metabolic pathways. After 14 days, miR395 and miR169 families were up-regulated, while miR399 and miR827 families were down-regulated in ABA-treated plants. These miRNAs are mostly characterized as regulators of macronutrient uptake. We identified 77 and 30 differentially expressed siRNA loci in the first and second time-points respectively. Interestingly, a majority of these ABA-responsive siRNAs were found to be mainly associated with the non-coding regions of the genome, as well as with genes related to photosynthesis, particularly those encoding light-harvesting complex proteins. In summary, our data suggest that ABA-responsive miRNAs contribute to the positive effects of ABA by increasing plant antioxidant capacity and lignification in the short-term while increasing nutrient uptake in the long term.

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Section: )mentioning

confidence: 99%

ABA-responsive small RNAs contribute to drought stress memory by regulating antioxidant activity and lignification

Khoshniat,

Rafudeen,

Seifi

2023

Preprint

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Identification of drought and heat tolerant tepary beans in a multi‐environment trial study

Barrera,

Berny Mier y Teran,

Aparicio

et al. 2024

Crop Science

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Abiotic constraints, such as drought and heat driven by climate change, negatively impact the production of the common bean (Phaseolus vulgaris L.), an essential grain legume worldwide. The ability to tolerate drought and heat stress in common bean can be improved by introducing genetic variation from related species, such as tepary bean (Phaseolus acutifolius A. Gray), which has recently gained attention because of its adaptation to drought and heat stresses and potential use as a genetic resource and alternative crop. To better understand the phenotypic response of tepary bean to drought and heat stress in multiple environments and trials and to select highly adapted tepary beans, we conducted two field experiments. In Experiment 1, we compared the adaptation to drought stress of tepary bean (n = 10), common bean (n = 10), and Lima bean (Phaseolus lunatus L.; n = 9) by assessing the reduction in grain yield under terminal drought compared to well‐irrigated conditions in two California locations with arid summer conditions. Of the three species, tepary bean showed the statistically strongest adaptation to terminal drought, followed by Lima bean and common bean. In Experiment 2, we evaluated a set of 22 tepary beans from contrasting origins for drought and heat stresses across multi‐environment trials (METs) in California, Nebraska, and Colombia, with common bean as a control. We found a considerable variation in the tepary bean phenotypic response to these MET conditions, as a result of a strong genotype × environment interaction. Also, we identified tepary bean accessions adapted to drought, heat, and well‐irrigated conditions across multiple climate zones. Understanding the performance of tepary bean across multiple environments and identifying tepary beans with broad and target‐specific adaptation will maximize the potential use of the species.

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Change in geo-environmental conditions and crop productivity

Sharma

2024

Advances in Food Security and Sustainability

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Supporting crop plant resilience during climate change

Cited by 5 publications

References 158 publications

ABA-responsive small RNAs contribute to drought stress memory by regulating antioxidant activity and lignification

ABA-responsive small RNAs contribute to drought stress memory by regulating antioxidant activity and lignification

Identification of drought and heat tolerant tepary beans in a multi‐environment trial study

Change in geo-environmental conditions and crop productivity

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