Reap the crop wild relatives for breeding future crops

Bohra, Abhishek; Kilian, Benjamin; Sivasankar, S.; Cáccamo, Mario; Chikelu,; McCouch, Susan R.; Varshney, Rajeev K.

doi:10.1016/j.tibtech.2021.08.009

Cited by 190 publications

(142 citation statements)

References 127 publications

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“…Such a selection has created genetic bottlenecks as only a limited number of progenitors with beneficial traits were selected (Zhang et al, 2017). Crop wild relatives, the closely related species of cultivated crops, have been omitted in the past because of their poor agronomic traits, but are receiving increasing attention as they contain naturally acquired tolerances and resistances to biotic and abiotic stresses (Bohra et al, 2021; Dempewolf et al, 2017; King et al, 2017; Prohens et al, 2017). Diversity of crop wild relatives was recently screened for drought tolerance in alfalfa (Humphries et al, 2021), wheat (Aberkane et al, 2021; Reynolds et al, 2007), barley (Honsdorf et al, 2014; Naz et al, 2014), sorghum (Cowan et al, 2020; Ochieng et al, 2021) and sunflower (Seiler et al, 2017) amongst many others.…”

Section: Introductionmentioning

confidence: 99%

High‐throughput phenotyping reveals differential transpiration behaviour within the banana wild relatives highlighting diversity in drought tolerance

Eyland

Luchaire

Cabrera‐Bosquet

et al. 2022

Plant Cell & Environment

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Crop wild relatives, the closely related species of crops, may harbour potentially important sources of new allelic diversity for (a)biotic tolerance or resistance. However, to date, wild diversity is only poorly characterized and evaluated. Banana has a large wild diversity but only a narrow proportion is currently used in breeding programmes. The main objective of this study was to evaluate genotype‐dependent transpiration responses in relation to the environment. By applying continuous high‐throughput phenotyping, we were able to construct genotype‐specific transpiration response models in relation to light, VPD and soil water potential. We characterized and evaluated six (sub)species and discerned four phenotypic clusters. Significant differences were observed in leaf area, cumulative transpiration and transpiration efficiency. We confirmed a general stomatal‐driven ‘isohydric’ drought avoidance behaviour, but discovered genotypic differences in the onset and intensity of stomatal closure. We pinpointed crucial genotype‐specific soil water potentials when drought avoidance mechanisms were initiated and when stress kicked in. Differences between (sub)species were dependent on environmental conditions, illustrating the need for high‐throughput dynamic phenotyping, modelling and validation. We conclude that the banana wild relatives contain useful drought tolerance traits, emphasising the importance of their conservation and potential for use in breeding programmes.

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Section: Introductionmentioning

confidence: 99%

High‐throughput phenotyping reveals differential transpiration behaviour within the banana wild relatives highlighting diversity in drought tolerance

Eyland

Luchaire

Cabrera‐Bosquet

et al. 2022

Plant Cell & Environment

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“…Since natural selection has already tested more options than humans ever will [ 32 ], the review proposes (1) habitat-based population-guided samplings targeting unexplored semi-arid regions, and (2) geo-referencing-based environmentally coupled genetic characterizations of those collections [ 33 , 34 ]. The review ends prospecting last-generation ‘big data’ pipelines, such as genomic prediction [ 18 ], genomic-assisted back-crossing (GABC), speed breeding [ 10 ], and machine learning [ 35 ], all of which may help CWR boost pre-breeding for adaptation [ 36 , 37 ].…”

Section: Natural Adaptation Meets Breeding For Abiotic Stress Tolerancementioning

confidence: 99%

“…The pillars of such discussion include the need to: (1) monitor and forecast gender and generation gaps to shrink disparity over time, (2) fund long-term synergies to leverage plant resources independent of market trends [ 45 ], (3) bridge plant germplasm resources with plant breeding [ 46 ], and (4) encourage joint training programs in last-generation technologies to speed up breeding cycles [ 18 ] and mitigate tradeoffs [ 47 ]. In parallel, it is necessary to find innovative bio-economical uses (such as was carried out by Hammenhag et al [ 14 ]), and to (5) harness neglected or underutilized species [ 48 ] as a source of new [ 49 ] and future [ 37 ] crops (as envisioned by Buitrago-Bitar et al [ 15 ] and Thapa et al [ 13 ]). We look forward to seeing future research implementing these recommendations on crop–wild complexes [ 50 , 51 , 52 , 53 ].…”

Section: Meeting Future Demandsmentioning

confidence: 99%

Evolutionary Genetics of Crop-Wild Complexes

Cortés

Cornille

Yockteng

2021

Genes

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“…Seed shattering is a significant drawback affecting yield loss in both taxa of Australian wild rice. Gene editing using CRISPR-Cas to induce loss of function in shattering genes could allow rapid production of potentially new wild rice cultivars ( Bohra et al, 2021 ). Advancement in genome and transcriptome sequencing has been a major contributor to improving gene target identification.…”

Section: Introductionmentioning

confidence: 99%

Potential of Genome Editing to Capture Diversity From Australian Wild Rice Relatives

et al. 2022

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Rice, a staple food worldwide and a model crop, could benefit from the introduction of novel genetics from wild relatives. Wild rice in the AA genome group closely related to domesticated rice is found across the tropical world. Due to their locality outside the range of domesticated rice, Australian wild rice populations are a potential source of unique traits for rice breeding. These rice species provide a diverse gene pool for improvement that could be utilized for desirable traits such as stress resistance, disease tolerance, and nutritional qualities. However, they remain poorly characterized. The CRISPR/Cas system has revolutionized gene editing and has improved our understanding of gene functions. Coupled with the increasing availability of genomic information on the species, genes in Australian wild rice could be modified through genome editing technologies to produce new domesticates. Alternatively, beneficial alleles from these rice species could be incorporated into cultivated rice to improve critical traits. Here, we summarize the beneficial traits in Australian wild rice, the available genomic information and the potential of gene editing to discover and understand the functions of novel alleles. Moreover, we discuss the potential domestication of these wild rice species for health and economic benefits to rice production globally.

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Reap the crop wild relatives for breeding future crops

Cited by 190 publications

References 127 publications

High‐throughput phenotyping reveals differential transpiration behaviour within the banana wild relatives highlighting diversity in drought tolerance

High‐throughput phenotyping reveals differential transpiration behaviour within the banana wild relatives highlighting diversity in drought tolerance

Evolutionary Genetics of Crop-Wild Complexes

Potential of Genome Editing to Capture Diversity From Australian Wild Rice Relatives

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