Nutritionally-Enhanced Apples: Markers for Molecular Breeding for Fruit Vitamin C Concentrations in Apple

Keulemans, Johan; Davey, Mark W.; Chagné, David; Gardiner, S.E.; Laing, William A.

doi:10.17660/actahortic.2014.1048.19

Cited by 2 publications

(1 citation statement)

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“…Nonetheless, apart from the profound genetic differences in the AsA pool between cultivars, remarkable differences can be also attributed to different environmental (presumably light and temperature) and growing conditions, as well as ripening stage at harvest and postharvest handling [ 2 , 63 ]. Among them, the ripening stage at harvest is probably the key regulatory factor in climacteric species such as tomato, as ripening is thought to be an oxidative process influencing both antioxidant machinery and senescence-related processes such as cell-wall loosening [ 64 ].…”

Section: Ascorbic Acid Accumulation and Metabolism In Tomatoesmentioning

confidence: 99%

Regulation of Vitamin C Accumulation for Improved Tomato Fruit Quality and Alleviation of Abiotic Stress

Κουκουνάρας

Kostas

Patelou

et al. 2021

Genes

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Ascorbic acid (AsA) is an essential multifaceted phytonutrient for both the human diet and plant growth. Optimum levels of AsA accumulation combined with balanced redox homeostasis are required for normal plant development and defense response to adverse environmental stimuli. Notwithstanding its moderate AsA levels, tomatoes constitute a good source of vitamin C in the human diet. Therefore, the enhancement of AsA levels in tomato fruit attracts considerable attention, not only to improve its nutritional value but also to stimulate stress tolerance. Genetic regulation of AsA concentrations in plants can be achieved through the fine-tuning of biosynthetic, recycling, and transport mechanisms; it is also linked to changes in the whole fruit metabolism. Emerging evidence suggests that tomato synthesizes AsA mainly through the l-galactose pathway, but alternative pathways through d-galacturonate or myo-inositol, or seemingly unrelated transcription and regulatory factors, can be also relevant in certain developmental stages or in response to abiotic factors. Considering the recent advances in our understanding of AsA regulation in model and other non-model species, this review attempts to link the current consensus with novel technologies to provide a comprehensive strategy for AsA enhancement in tomatoes, without any detrimental effect on plant growth or fruit development.

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Section: Ascorbic Acid Accumulation and Metabolism In Tomatoesmentioning

confidence: 99%

Regulation of Vitamin C Accumulation for Improved Tomato Fruit Quality and Alleviation of Abiotic Stress

Κουκουνάρας

Kostas

Patelou

et al. 2021

Genes

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Identifying Chickpea Genotypes Rich in Ascorbic Acid as a Source of Drought Tolerance for Genetic Improvement in Semi-Arid Regions

Raut,

Gadakh,

Kute

et al. 2024

Preprint

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Drought stress triggers a cascade of physiological changes in plants, including oxidative damage. Ascorbic acid (AsA), commonly known as vitamin C, is a vital non-enzymatic antioxidant with the potential to scavenge reactive oxygen species and modulate key processes in crop plants under abiotic stresses like drought. Chickpea, is predominantly cultivated in drought-prone regions. We demonstrate the utility of phenotyping for AsA content to enhance drought tolerance in chickpea. Using automated phenomics facility that can monitor daily soil moisture levels, we optimized a protocol for screening endogenous AsA levels in chickpea genotypes. Findings revealed that AsA accumulation peaked at 30% field capacity (FC), when measured between 11:30 am and 12:00 noon, coinciding with the maximum solar radiation during a 24 h cycle. Leveraging this protocol, screened 106 diverse chickpea genotypes for genetic variability in AsA accumulation under soil moisture depletions, identifying two sets of genotypes exhibiting differential AsA levels. Subsequent field evaluations over two consecutive years demonstrated that genotypes with elevated AsA levels like BDNG-2018-15 and PG-1201-20 displayed enhanced drought tolerance with minimum reductions in yield attributes compared to popular cultivars. These AsA-rich genotypes hold promise as valuable genetic resources for breeding programs aimed at improving drought tolerance in chickpea cultivation.

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Nutritionally-Enhanced Apples: Markers for Molecular Breeding for Fruit Vitamin C Concentrations in Apple

Cited by 2 publications

References 0 publications

Regulation of Vitamin C Accumulation for Improved Tomato Fruit Quality and Alleviation of Abiotic Stress

Regulation of Vitamin C Accumulation for Improved Tomato Fruit Quality and Alleviation of Abiotic Stress

Identifying Chickpea Genotypes Rich in Ascorbic Acid as a Source of Drought Tolerance for Genetic Improvement in Semi-Arid Regions

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