Level of Abscisic Acid in Integuments, Nucellus, Endosperm, and Embryo of Peach Seeds (Prunus persica L. cv Springcrest) during Development

Fruits of Halehaven and Fragar peaches (mid- and late season respectively) were sampled and examined weekly during one complete growing season. The period of rapid growth following anthesis (stage I) was characterized by relatively high respiration and ethylene production rates. Fruits of both cultivars entered the subsequent period of slow growth (stage II) together. Ethylene production was low and respiration declined throughout stage II. Sprays of (2-chloroethyl)phosphonic acid (ethephon), but not succinic acid-2,2-dimethylhydrazide (SADH), resulted in increased ethylene evolution by stage II fruits. Neither chemical altered respiration or the duration of stage II. Both chemicals, however, advanced commercial harvest and promoted ripening of fruits sampled throughout the final rapid growth period (stage III). All fruits sampled during stage III showed a climacteric-like increase in respiration and ethylene production. The horticultural effectiveness of SADH and ethephon appears to be due to a promotion of physiological activity in stage III. Abscisic acid in peach pericarp increased just before and during stage III. Possible roles for abscisic acid and ethylene in regulating the stage II-stage III transition in peaches and other fruits are discussed.

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ETHYLENE EVOLUTION AND ABSCISIC ACID CONTENT IN ETHEPHON-TREATED PEACH FRUIT (PRUNUS PERSICA (L.) BATSCH)

Acta Horticulturae ◽

10.17660/actahortic.1978.80.49 ◽

1978 ◽

pp. 301-308

Author(s):

G. Costa ◽

G.C. Martin

Keyword(s):

Abscisic Acid ◽

Acid Content ◽

Prunus Persica ◽

Ethylene Evolution ◽

Peach Fruit ◽

Abscisic Acid Content

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Seedling Development in Peach, Prunus persica (L.) Batsch. II. Effects of Plant Growth Regulators and Their Possible Role

Functional Plant Biology ◽

10.1071/pp9770359 ◽

1977 ◽

Vol 4 (3) ◽

pp. 359 ◽

Cited By ~ 5

Author(s):

RP Zigas ◽

BG Coombe

Keyword(s):

Abscisic Acid ◽

Water Stress ◽

Plant Growth ◽

Plant Growth Regulators ◽

Growth Regulators ◽

Prunus Persica ◽

Stem Elongation ◽

Seedling Development ◽

Inhibitor Activity ◽

Gibberellin Activity

Treatment of peach embryos from partially stratified seeds with abscisic acid (ABA) inhibited germination and promoted the production of leaf lesions, responses which are typical of testa presence. A period of water stress during germination also promoted lesion production. Neither testas nor ABA stimulated lesions on seedlings from 25°C-stratified seed, but mixtures of ABA and GA*3 were synergistic in promoting lesions; at the same time ABA and GA3 had opposite effects on germination and stem elongation, and mixtures had intermediate effects. Evidence was obtained for effects attributable to a balance between GA and ABA. Other inhibitors and promotors had no effect on lesions. The results from excision and substitution experiments permit an explanation of the effects of stratification in terms of three events: (a) a decrease in inhibitor activity in the testa; (b) an increase in gibberellin activity in the epicotyl; and (c) diffusion of inhibitor to the epicotyl via the radicle when the seed is returned to warm conditions.

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Functional Analysis of Abscisic Acid-Stress Ripening Transcription Factor in Prunus persica f. atropurpurea

Journal of Plant Growth Regulation ◽

10.1007/s00344-017-9695-5 ◽

2017 ◽

Vol 37 (1) ◽

pp. 85-100 ◽

Cited By ~ 2

Author(s):

Wei Jiaxing ◽

Hu Feng ◽

Jiang Weibing ◽

Chen Haoming

Keyword(s):

Functional Analysis ◽

Transcription Factor ◽

Abscisic Acid ◽

Prunus Persica ◽

Acid Stress

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Gaining Insight into Exclusive and Common Transcriptomic Features Linked to Drought and Salinity Responses across Fruit Tree Crops

Plants ◽

10.3390/plants9091059 ◽

2020 ◽

Vol 9 (9) ◽

pp. 1059

Author(s):

Jubina Benny ◽

Annalisa Marchese ◽

Antonio Giovino ◽

Francesco Paolo Marra ◽

Anna Perrone ◽

...

Keyword(s):

Abscisic Acid ◽

Abiotic Stress ◽

Stress Responses ◽

Metal Ion ◽

Prunus Persica ◽

Meta Analysis ◽

Fruit Tree ◽

Fine Tuning ◽

Plant Responses ◽

Tree Crops

The present study aimed at identifying and mapping key genes expressed in root tissues involved in drought and salinity tolerance/resistance conserved among different fruit tree species. Twenty-six RNA-Seq samples were analyzed from six published studies in five plant species (Olea europaea, Vitis riparia Michx, Prunus mahaleb, Prunus persica, Phoenix dactylifera). This meta-analysis used a bioinformatic pipeline identifying 750 genes that were commonly modulated in three salinity studies and 683 genes that were commonly regulated among three drought studies, implying their conserved role in resistance/tolerance/response to these environmental stresses. A comparison was done on the genes that were in common among both salinity and drought resulted in 82 genes, of which 39 were commonly regulated with the same trend of expression (23 were upregulated and 16 were downregulated). Gene set enrichment and pathway analysis pointed out that pathways encoding regulation of defense response, drug transmembrane transport, and metal ion binding are general key molecular responses to these two abiotic stress responses. Furthermore, hormonal molecular crosstalk plays an essential role in the fine-tuning of plant responses to drought and salinity. Drought and salinity induced a different molecular “hormonal fingerprint”. Dehydration stress specifically enhanced multiple genes responsive to abscisic acid, gibberellin, brassinosteroids, and the ethylene-activated signaling pathway. Salt stress mostly repressed genes encoding for key enzymes in signaling proteins in auxin-, gibberellin-(gibberellin 2 oxidase 8), and abscisic acid-related pathways (aldehyde oxidase 4, abscisic acid-responsive element-binding protein 3). Abiotic stress-related genes were mapped into the chromosome to identify molecular markers usable for the improvement of these complex quantitative traits. This meta-analysis identified genes that serve as potential targets to develop cultivars with enhanced drought and salinity resistance and/or tolerance across different fruit tree crops in a biotechnological sustainable way.

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