Drought‐tolerant transcription factors identified inArachis dardaniandArachis ipaënsis

Cason, John M.; Simpson, C. E.; Rooney, William L.; Brady, Jeff A.

doi:10.1002/agg2.20069

Cited by 4 publications

(2 citation statements)

References 61 publications

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“…Wild groundnut species genes that are drought stress involved are discriminated into two groups: (i) genes that are plant cell protectors and act as upstream regulators and (ii) regulatory genes, such as transcription factors, implicated in the ABA pathways [ 146 ]. Tolerance to abiotic stresses has been recorded in A. stenosperma [ 128 ], while Guimarães et al [ 147 ] identified a remarkable number of transcription factors and genes related to drought stress in a peanut ancestor, A. duranencis .…”

Section: The Exploitation Of the Cwrs In Specific Cultivated Speciesmentioning

confidence: 99%

Crop Wild Relatives: A Valuable Source of Tolerance to Various Abiotic Stresses

Kapazoglou¹,

Gerakari

Lazaridi

et al. 2023

Plants

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Global climate change is one of the major constraints limiting plant growth, production, and sustainability worldwide. Moreover, breeding efforts of the past years have focused on improving certain favorable crop traits, leading to genetic bottlenecks. The use of crop wild relatives (CWRs) to expand genetic diversity and improve crop adaptability seems to be a promising and sustainable approach for crop improvement in the context of the ongoing climate challenges. In this review, we present the progress that has been achieved towards CWRs exploitation for enhanced resilience against major abiotic stressors (e.g., water deficiency, increased salinity, and extreme temperatures) in crops of high nutritional and economic value, such as tomato, legumes, and several woody perennial crops. The advances in -omics technologies have facilitated the elucidation of the molecular mechanisms that may underlie abiotic stress tolerance. Comparative analyses of whole genome sequencing (WGS) and transcriptomic profiling (RNA-seq) data between crops and their wild relative counterparts have unraveled important information with respect to the molecular basis of tolerance to abiotic stressors. These studies have uncovered genomic regions, specific stress-responsive genes, gene networks, and biochemical pathways associated with resilience to adverse conditions, such as heat, cold, drought, and salinity, and provide useful tools for the development of molecular markers to be used in breeding programs. CWRs constitute a highly valuable resource of genetic diversity, and by exploiting the full potential of this extended allele pool, new traits conferring abiotic-stress tolerance may be introgressed into cultivated varieties leading to superior and resilient genotypes. Future breeding programs may greatly benefit from CWRs utilization for overcoming crop production challenges arising from extreme environmental conditions.

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Section: The Exploitation Of the Cwrs In Specific Cultivated Speciesmentioning

confidence: 99%

Crop Wild Relatives: A Valuable Source of Tolerance to Various Abiotic Stresses

Kapazoglou¹,

Gerakari

Lazaridi

et al. 2023

Plants

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show abstract

“…Peanut suffers from a narrow genetic base (Kochert et al, 1991) and no longer has access to many genes contained in related wild relatives. However, many genes associated with both biotic and abiotic stressors have been identified (Cason et al, 2020), and gene introgression has successfully been used to move alleles into cultivated peanut and is still one of the best options available to peanut breeders (Cason et al, 2020). An excellent example of this is the resistance to root knot transferred from Arachis cardenasii (Burow et al, 1996;Simpson et al, 2003).…”

Section: Introductionmentioning

confidence: 99%

A Proof-of-Principle Study of Non-invasive Identification of Peanut Genotypes and Nematode Resistance Using Raman Spectroscopy

Payne

Dou

Cason³

et al. 2022

Front. Plant Sci.

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Identification of peanut cultivars for distinct phenotypic or genotypic traits whether using visual characterization or laboratory analysis requires substantial expertise, time, and resources. A less subjective and more precise method is needed for identification of peanut germplasm throughout the value chain. In this proof-of-principle study, the accuracy of Raman spectroscopy (RS), a non-invasive, non-destructive technique, in peanut phenotyping and identification is explored. We show that RS can be used for highly accurate peanut phenotyping via surface scans of peanut leaves and the resulting chemometric analysis: On average 94% accuracy in identification of peanut cultivars and breeding lines was achieved. Our results also suggest that RS can be used for highly accurate determination of nematode resistance and susceptibility of those breeding lines and cultivars. Specifically, nematode-resistant peanut cultivars can be identified with 92% accuracy, whereas susceptible breeding lines were identified with 81% accuracy. Finally, RS revealed substantial differences in biochemical composition between resistant and susceptible peanut cultivars. We found that resistant cultivars exhibit substantially higher carotenoid content compared to the susceptible breeding lines. The results of this study show that RS can be used for quick, accurate, and non-invasive identification of genotype, nematode resistance, and nutrient content. Armed with this knowledge, the peanut industry can utilize Raman spectroscopy for expedited breeding to increase yields, nutrition, and maintaining purity levels of cultivars following release.

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Use of wild and exotic germplasm for resistance in peanut

Cason¹,

Simpson²,

Burow

et al. 2022

J of Plant Registrations

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Peanut (Arachis hypogaea L.) is an important crop grown around the world but lacks genetic resistance to many biotic and abiotic stresses. However, these traits can be found in the wild and exotic germplasm to which peanut is genetically related. The genus Arachis contains 83 described species, some of which are home to a reservoir of useful traits and that have served as a source of resistance with their movement into the cultivated peanut. There are several excellent examples of using exotic and wild germplasm to successfully to incorporate biotic resistance traits into cultivated peanut. It is also possible that some of the genetic resources could someday be used to further enhance peanut in unforeseen ways. In this article we present some examples of successful introgression and how these success stories have been achieved.

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Drought‐tolerant transcription factors identified inArachis dardaniandArachis ipaënsis

Cited by 4 publications

References 61 publications

Crop Wild Relatives: A Valuable Source of Tolerance to Various Abiotic Stresses

Crop Wild Relatives: A Valuable Source of Tolerance to Various Abiotic Stresses

A Proof-of-Principle Study of Non-invasive Identification of Peanut Genotypes and Nematode Resistance Using Raman Spectroscopy

Use of wild and exotic germplasm for resistance in peanut

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