Drought Response and Genetic Diversity in <i>Pisum fulvum</i>, a Wild Relative of Domesticated Pea

Naim-Feil, Erez; Toren, Maya; Aubert, Grégoire; Rubinstein, Mor; Rosen, Ada; Eshed, Ravit; Sherman, Amir; Ophir, Ron; Saranga, Yehoshua; Abbo, Shahal

doi:10.2135/cropsci2016.10.0880

Cited by 28 publications

(28 citation statements)

References 49 publications

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“…Potential drought tolerance traits in CWR include leaf waxiness found in P. sativum , root architecture, and Rhizobial associations. P. fulvum also exhibits lower drought susceptibility and could potentially be a source for drought tolerance (Naim‐Feil et al, 2017). There are uninvestigated possibilities to explore wild peas from extreme environments in Central Asia and arid Middle East for abiotic stress tolerances based on environmental parameters and prioritization of accessions for controlled environment studies.…”

Section: Peamentioning

confidence: 99%

Potential and limits of exploitation of crop wild relatives for pea, lentil, and chickpea improvement

Coyne¹,

Kumar²,

Wettberg

et al. 2020

Legume Science

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Legumes represent the second most important family of crop plants after grasses, accounting for approximately 27% of the world's crop production. Past domestication processes resulted in a high degree of relatedness between modern varieties of crops, leading to a narrower genetic base of cultivated germplasm prone to pests and diseases. Crop wild relatives (CWRs) harbor genetic diversity tested by natural selection in a range of environments. To fully understand and exploit local adaptation in CWR, studies in geographical centers of origin combining ecology, physiology, and genetics are needed. With the advent of modern genomics and computation, combined with systematic phenotyping, it is feasible to revisit wild accessions and landraces and prioritize their use for breeding, providing sources of disease resistances; tolerances of drought, heat, frost, and salinity abiotic stresses; nutrient densities across major and minor elements; and food quality traits. Establishment of hybrid populations with CWRs gives breeders a considerable benefit of a prebreeding tool for identifying and harnessing wild alleles and provides extremely valuable long-term resources. There is a need of further collecting and both ex situ and in situ conservation of CWR diversity of these taxa in the face of habitat loss and degradation and climate change. In this review, we focus on three legume crops domesticated in the Fertile Crescent, pea, chickpea, and lentil, and summarize the current state and potential of their respective CWR taxa for crop improvement.

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Section: Peamentioning

confidence: 99%

Potential and limits of exploitation of crop wild relatives for pea, lentil, and chickpea improvement

Coyne¹,

Kumar²,

Wettberg

et al. 2020

Legume Science

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“…This matches the results of Naim-Feil et al (2017), although our genetic clusters do not fully correspond to theirs. Naim-Feil et al (2017) suggested that a recent range expansion or seed transfer by migrating herbivores might explain the observed genetic structure. However, we did not detect an increase of the effective population size in the recent past.…”

Section: Discussionmentioning

confidence: 99%

Limited divergent adaptation despite a substantial environmental cline in wild pea

et al. 2020

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Isolation by environment (IBE) is a widespread phenomenon in nature. It is commonly expected that the degree of difference among environments is proportional to the level of divergence between populations in their respective environments. It is therefore assumed that a species' genetic diversity displays a pattern of IBE in the presence of a strong environmental cline if gene flow does not mitigate isolation. We tested this common assumption by analysing the genetic diversity and demographic history of Pisum fulvum, which inhabits contrasting habitats in the southern Levant and is expected to display only minor migration rates between populations, making it an ideal test case. Ecogeographical and subpopulation structure were analysed and compared. The correlation of genetic with environmental distances was calculated to test the effect of isolation by distance and IBE and detect the main drivers of these effects. Historical effective population size was estimated using stairway plot. Limited overlap of ecogeographical and genetic clustering was observed, and correlation between genetic and environmental distances was statistically significant but small. We detected a sharp decline of effective population size during the last glacial period. The low degree of IBE may be the result of genetic drift due to a past bottleneck. Our findings contradict the expectation that strong environmental clines cause IBE in the absence of extensive gene flow.

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“…Nine accessions of P. fulvum , representing a wide sample of the genetic diversity in this species, were generously provided by Dr. S. Abbo, The Hebrew University, Rehovot, Israel. Passport data for these can be obtained in Naim-Feil et al (2017) . Two additional samples of P. fulvum from Israel (VIR 6070 and VIR 6071) were kindly supplied by Dr. F. Gorel, then at the Institute of Cytology & Genetics, Novosibirsk, Russia.…”

Section: Methodsmentioning

confidence: 99%

Domestication of Pea (Pisum sativum L.): The Case of the Abyssinian Pea

Weeden

2018

Front. Plant Sci.

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Phylogenetic relationships of the Abyssinian pea (Pisum sativum ssp. abyssinicum) to other subspecies and species in the genus were investigated to test between different hypotheses regarding its origin and domestication. An extensive sample of the Pisum sativum ssp. sativum germplasm was investigated, including groups a-1, a-2, b, c, and d as identified by Kwon et al. (2012). A broad sample of P. fulvum but relatively few P. s. ssp. elatius accessions were analyzed. Partial sequences of 18 genes were compared and these results combined with comparisons of additional genes done by others and available in the literature. In total, 54 genes or gene fragment sequences were involved in the study. The observed affinities between alleles in P. ssp. sativum, P. s. ssp. abyssinicum, P. s. ssp. elatius, and P. fulvum clearly demonstrated a close relationship among the three P. sativum subspecies and rejected the hypothesis that the Abyssinian pea was formed by hybridization between one of the P. sativum subspecies and P. fulvum. If hybridization were involved in the generation of the Abyssinian pea, it must have been between P. s. ssp. sativum and P. s. ssp. elatius, although the Abyssinian pea possesses a considerable number of highly unique alleles, implying that the actual P. s. ssp. elatius germplasm involved in such a hybridization has yet to be tested or that the hybridization occurred much longer ago than the postulated 4000 years bp. Analysis of the P. s. ssp. abyssinicum alleles in genomic regions thought to contain genes critical for domestication indicated that the indehiscent pod trait was independently developed in the Abyssinian pea, whereas the loss of seed dormancy was either derived from P. s. ssp. sativum or at least partially developed before the P. s. ssp. abyssinicum lineage diverged from that leading to P. s. ssp. sativum.

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Drought Response and Genetic Diversity in Pisum fulvum, a Wild Relative of Domesticated Pea

Cited by 28 publications

References 49 publications

Potential and limits of exploitation of crop wild relatives for pea, lentil, and chickpea improvement

Potential and limits of exploitation of crop wild relatives for pea, lentil, and chickpea improvement

Limited divergent adaptation despite a substantial environmental cline in wild pea

Domestication of Pea (Pisum sativum L.): The Case of the Abyssinian Pea

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