Genetic Analysis and Breeding of Pumpkins and Squash for High Carotene Content

Paris, Harry S.

doi:10.1007/978-3-642-84830-8_5

Cited by 16 publications

(10 citation statements)

References 34 publications

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“…Squashes belong to the family “Cucurbitaceae”. “ Cucurbita moschata ” is adapted to warmer climates and is mostly grown in tropical and subtropical regions, whereas “ C. maxima ” is mostly grown in warmer temperate regions [ 8 , 9 ]. In our long-term study, we developed an interspecific (“ Cucurbita maxima ” × “ Cucurbita moschata ”) inbred line of squash named “ Maxchata ” and determined its heat tolerance by comparing its photosynthetic attributes [ 10 ].…”

Section: Introductionmentioning

confidence: 99%

Antioxidant Enzymatic Activities and Gene Expression Associated with Heat Tolerance in the Stems and Roots of Two Cucurbit Species (“Cucurbita maxima” and “Cucurbita moschata”) and Their Interspecific Inbred Line “Maxchata”

Ara

Nakkanong

et al. 2013

IJMS

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The elucidation of heat tolerance mechanisms is required to combat the challenges of global warming. This study aimed to determine the antioxidant enzyme responses to heat stress, at the enzymatic activity and gene expression levels, and to investigate the antioxidative alterations associated with heat tolerance in the stems and roots of squashes using three genotypes differing in heat tolerance. Plants of heat-tolerant “C. moschata”, thermolabile “C. maxima” and moderately heat-tolerant interspecific inbred line “Maxchata” genotypes were exposed to moderate (37 °C) and severe (42 °C) heat shocks. “C. moschata” exhibited comparatively little oxidative damage, with the lowest hydrogen peroxide (H2O2), superoxide (O2−) and malondialdehyde (MDA) contents in the roots compared to stems, followed by “Maxchata”. The enzyme activities of superoxide dismutase (SOD), ascorbate peroxidase (APX), catalase (CAT) and peroxidase (POD) were found to be increased with heat stress in tolerant genotypes. The significant inductions of FeSOD, MnSOD, APX2, CAT1 and CAT3 isoforms in tolerant genotypes suggested their participation in heat tolerance. The differential isoform patterns of SOD, APX and CAT between stems and roots also indicated their tissue specificity. Furthermore, despite the sequence similarity of the studied antioxidant genes among “C. maxima” and “Maxchata”, most of these genes were highly induced under heat stress in “Maxchata”, which contributed to its heat tolerance. This phenomenon also indicated the involvement of other unknown genetic and/or epigenetic factors in controlling the expression of these antioxidant genes in squashes, which demands further exploration.

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Section: Introductionmentioning

confidence: 99%

Antioxidant Enzymatic Activities and Gene Expression Associated with Heat Tolerance in the Stems and Roots of Two Cucurbit Species (“Cucurbita maxima” and “Cucurbita moschata”) and Their Interspecific Inbred Line “Maxchata”

Ara

Nakkanong

et al. 2013

IJMS

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“…Carotenoids present in the flesh of Cucurbita impart yellow and orange coloration, but it varies greatly among Cucurbita spp. and accessions [46,[202][203][204], and tends to increase during storage [205]. C. maxima and C. moschata cultivars have been reported to be rich in carotenoids [46,206].…”

Section: Cucurbitamentioning

confidence: 99%

Genetic and Pre- and Postharvest Factors Influencing the Content of Antioxidants in Cucurbit Crops

2021

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Cucurbitaceae is one of the most economically important plant families, and includes some worldwide cultivated species like cucumber, melons, and squashes, and some regionally cultivated and feral species that contribute to the human diet. For centuries, cucurbits have been appreciated because of their nutritional value and, in traditional medicine, because of their ability to alleviate certain ailments. Several studies have demonstrated the remarkable contents of valuable compounds in cucurbits, including antioxidants such as polyphenols, flavonoids, and carotenoids, but also tannins and terpenoids, which are abundant. This antioxidant power is beneficial for human health, but also in facing plant diseases and abiotic stresses. This review brings together data on the antioxidant properties of cucurbit species, addressing the genetic and pre- and postharvest factors that regulate the antioxidant content in different plant organs. Environmental conditions, management, storage, and pre- and postharvest treatments influencing the biosynthesis and activity of antioxidants, together with the biodiversity of this family, are determinant in improving the antioxidant potential of this group of species. Plant breeding, as well as the development of innovative biotechnological approaches, is also leading to new possibilities for exploiting cucurbits as functional products.

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“…The first fruit set on every plant that also had the same tint of skin colour and was of the same size was chosen. The fruits were stored in a cold room (0.5-2 C, 80% RH) until the beginning of November to allow the synthesis of carotenoids and the accumulation of b-carotene to proceed (Chavasit et al, 2002;Paris, 1994). Although the total carotenoid and b-carotene contents in C. maxima fruits increase until the middle or the end of November, when they reach the highest levels (Niewczas & Mitek, 2004;Niewczas, Szweda, & Mitek, 2005), it was decided to start processing at the beginning of November to avoid microbial fruit spoilage.…”

Section: Plant Materialsmentioning

confidence: 99%

Studies on the usefulness of Cucurbita maxima for the production of ready-to-eat dried vegetable snacks with a high carotenoid content

Konopacka

Seroczyńska

Korzeniewska

et al. 2010

LWT - Food Science and Technology

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Genetic Analysis and Breeding of Pumpkins and Squash for High Carotene Content

Cited by 16 publications

References 34 publications

Antioxidant Enzymatic Activities and Gene Expression Associated with Heat Tolerance in the Stems and Roots of Two Cucurbit Species (“Cucurbita maxima” and “Cucurbita moschata”) and Their Interspecific Inbred Line “Maxchata”

Antioxidant Enzymatic Activities and Gene Expression Associated with Heat Tolerance in the Stems and Roots of Two Cucurbit Species (“Cucurbita maxima” and “Cucurbita moschata”) and Their Interspecific Inbred Line “Maxchata”

Genetic and Pre- and Postharvest Factors Influencing the Content of Antioxidants in Cucurbit Crops

Studies on the usefulness of Cucurbita maxima for the production of ready-to-eat dried vegetable snacks with a high carotenoid content

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