Changes in chlorophyll and carotenoid pigments in the peel of ‘Triumph’ persimmon (Diospyros kaki L.) induced by pre-harvest gibberellin (GA3) treatment

Gross, Jeana; Bazak, H.; Blumenfeld, A.; Ben‐Arie, Ruth

doi:10.1016/0304-4238(84)90115-8

Cited by 18 publications

(11 citation statements)

References 14 publications

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“…Nakagawa et al (2008) found the main carotenoid composition in yellow-to orange-colored fruit was β-cryptoxanthin, and that lycopene was the major pigment in red-colored fruit. In persimmon fruit, maturity changes were accompanied by an increase in β-cryptoxanthin content (Gross et al 1984). But in the peel, total carotenoid content decreased until color break, then increased gradually and drastically at the last ripening stages (Ebert and Gross 1985), and the expression levels of DkPSY, DkLCYB, and DkBCH genes in peel tissue was higher than that in flesh and pedicel tissues .…”

Section: Discussionmentioning

confidence: 97%

Carotenoid Accumulation and Carotenogenic Genes Expression During Two Types of Persimmon Fruit (Diospyros kaki L.) Development

2010

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Persimmon (Diospyros kaki L.), belonging to the Ebenaceae family, has been used not only as a fresh fruit, but also for many medicinal uses. Carotenoids are the main pigment in persimmon fruit, which contribute significantly to fruit color and nutritional quality due to their composition and content. In this study, fruit quality indices, carotenoid contents and expression of carotenogenic genes were analyzed in two types of persimmon fruit. The results demonstrated that there was a positive correlation between fruit color and the contents of main composition and total carotenoids. Carotenoid accumulation in persimmon fruit resulted from the interaction of carotenogenic genes, but the molecular mechanisms responsible for accumulation of carotenoids in two types of persimmon fruit had a few differences. As a complete unit, the relatively low expression level of phytoene synthase gene (DkPSY) in "Niuxinshi" resulted in low carotenoid contents or even under the detection limit at the early fruit developmental stages; but low carotenoid contents in "Nishimurawase" were due to the relatively low expression level of carotenogenic genes other than DkPSY. At the late fruit developmental stages, increased expression levels of DkPSY, phytoene desaturase gene and beta-carotene hydroxylase gene (DkBCH) induced elevated carotenoid contents; because all carotenogenic genes strongly expressed in "Nishimurawase", a large amount of carotenoids were accumulated. In addition, β-cryptoxanthin was the main composition whose content increased with the fruit maturity changes, which was mainly because of DkBCH which might lead more conversion of β-carotene to β-cryptoxanthin.

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Section: Discussionmentioning

confidence: 97%

Carotenoid Accumulation and Carotenogenic Genes Expression During Two Types of Persimmon Fruit (Diospyros kaki L.) Development

2010

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“…These results suggest that GA 3 application may reduce fruit size in young trees independent of the effect of fruit load. GA 3 applied 10 d before the onset of harvest reduced persimmon fruit growth for %2 weeks (Gross et al, 1984). It is possible that GA 3 application at FB may have a similar effect on fruit growth.…”

Section: Discussionmentioning

confidence: 98%

Scoring and Girdling, but not GA3, Increase Yield without Decreasing Return Bloom in ‘Triumph’ Persimmon

Steyn¹,

Ungerer²,

Theron³

2008

horts

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The persimmon (Diospyros kaki Thunb.) cultivar Triumph is prone to poor fruit set, particularly in young orchards, in both Israel and South Africa where it is mostly grown. Two applications of 20 mg·L−1 gibberellic acid (GA3) at 30% and 70% full bloom (FB) are recommended as the industry norm to increase fruit set, but results obtained are often unsatisfactory. We conducted experiments during the 2005–06 and 2006–07 seasons in a young orchard (less than 5 years old) and a full-bearing orchard to determine the efficacy of GA3 application and scoring or girdling during FB to increase fruit set and yield in ‘Triumph’ persimmon. We also established the effect of 2005–06 treatments on return bloom in 2006–07. Although GA3 treatments were ineffective in increasing fruit set and reduced cumulative yield over the two seasons as a result of a reduction in return bloom, scoring increased the cumulative yield by 50% compared with the untreated control and by 92% compared with GA3 application in the young orchard. In the full-bearing orchard, scoring or girdling increased the cumulative yield over the 2005–06 and 2006–07 seasons by 52% compared with the industry standard GA3 application and by 22% compared with trees that received scoring/girdling in addition to GA3. Hence, scoring or girdling did not entirely offset the negative effect of GA3 application on return bloom. The increase in fruit numbers in response to fruit set treatment brought about a reduction in fruit mass. In conclusion, the ineffectiveness of GA3 in increasing fruit set and its negative effect on return bloom do not justify its further use to improve fruit set in young or full-bearing ‘Triumph’ orchards in South Africa. Either scoring or girdling can be used to increase yield but will need to be accompanied by pruning and thinning strategies to achieve adequate fruit size and to prevent the onset of alternate bearing resulting from overcropping.

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“…Citam, ainda, que a variação de pH e de textura e a indução de sistemas oxidativos também podem degradar clorofilas. Gross et al (1984) citam que a dinâmica de biogênese de cloroplastos e cromoplastos e, por conseqüência, de clorofilas e de carotenóides tem correlação inversa. Este comportamento foi observado nos caquis da cv.…”

Section: Ag3unclassified

“…A aplicação de AG 3 , além de ter proporcionado um retardo de 15 dias na colheita dos frutos (Quadro 1), preservou neles maiores teores de clorofila. Estes resultados são conseqüência do efeito do AG 3 como inibidor de clorofilases previamente demostrado por Gross (1982), Gross et al (1984) e Ben-Arie et al (1996).…”

Section: Ag3unclassified

Efeito da aplicação de ácido giberélico e cloreto de cálcio no retardamento da colheita e na conservabilidade de caqui, Fuyu

Danieli¹,

Girardi

Parussolo

et al. 2002

Rev. Bras. Frutic.

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Estudou-se o efeito do ácido giberélico (AG3) e do cloreto de cálcio CaCl2, aplicado em pré-colheita, no controle da maturação e na qualidade pós-colheita de caquis, cv. Fuyu. Para os tratamentos a campo, selecionaram-se parcelas de quatro plantas, que foram pulverizadas com: a)AG3 a 30ppm; b)CaCl2 a 1%(m/v); c)CaCl2 1% + AG3 a 30ppm; e d) água. A colheita foi efetuada quando as frutas apresentavam coloração verde-amarelada. O armazenamento foi realizado à temperatura ambiente, em sala aberta e em caixas plásticas. Na instalação do experimento e a cada 4 dias, durante 20 dias, avaliaram-se a perda de peso, firmeza de polpa, acidez total titulável, produção de etileno, o teor de sólidos solúveis, clorofilas e de carotenóides. O AG3agiu retardando a colheita em 15 dias e aumentando o potencial de conservação dos frutos. O uso do CaCl2 não retardou a maturação e, quando combinado, reduziu os efeitos benéficos do AG3 após a colheita.

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Changes in chlorophyll and carotenoid pigments in the peel of ‘Triumph’ persimmon (Diospyros kaki L.) induced by pre-harvest gibberellin (GA3) treatment

Cited by 18 publications

References 14 publications

Carotenoid Accumulation and Carotenogenic Genes Expression During Two Types of Persimmon Fruit (Diospyros kaki L.) Development

Carotenoid Accumulation and Carotenogenic Genes Expression During Two Types of Persimmon Fruit (Diospyros kaki L.) Development

Scoring and Girdling, but not GA3, Increase Yield without Decreasing Return Bloom in ‘Triumph’ Persimmon

Efeito da aplicação de ácido giberélico e cloreto de cálcio no retardamento da colheita e na conservabilidade de caqui, Fuyu

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