Changes in abscisic acid and antioxidant activity in sugar apples under drought conditions

Kowitcharoen, L.; Wongs‐Aree, C.; Setha, Sutthiwal; Komkhuntod, R.; Srilaong, V.; Kondo, Satoru

doi:10.1016/j.scienta.2015.06.043

Cited by 22 publications

(7 citation statements)

References 26 publications

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“…The water deficit can change the organelle, pigment concentration and metabolites, as well as stomatal regulation (Mohammadi et al, 2015). The closing of stomatal is considered a primary mechanism to regulate the water content when the plant is under dry conditions (Kowitcharoen et al, 2015;Zhao et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

Chlorophyll a fluorescence as an indicator of water stress in Calophyllum brasiliense

Reis

Scalon

Dresch

et al. 2020

Not Bot Horti Agrobo

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The objective of this study was to evaluate chlorophyll a fluorescence as a stress indicator in Calophyllum brasiliense Cambess seedlings grown with different concentrations of abscisic acid (ABA) under intermittent water deficit condition: daily irrigation without ABA (I); daily irrigation + 10 μM ABA (I 10); daily irrigation + 100 μM ABA (I 100); suspension of daily irrigation without ABA (SI); suspension of daily irrigation + 10 μM ABA (SI 10) and suspension of daily irrigation + 100 μM ABA (SI 100). The intermittent water deficit reduces water status and impairs the photochemical apparatus functioning and seedling quality. The fluorescence measurements helped identify the stress condition of water deficit in the cultivation of C. brasiliense and the beneficial effect of the application of 10 μM of ABA in minimizing stress and facilitating the recovery of seedlings after re-irrigation, while maintaining the integrity and function of the photosynthetic apparatus.

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Section: Introductionmentioning

confidence: 99%

Chlorophyll a fluorescence as an indicator of water stress in Calophyllum brasiliense

Reis

Scalon

Dresch

et al. 2020

Not Bot Horti Agrobo

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“…In rice (Oryza sativa L.), the ONAC066 overexpression plants showed an increased drought tolerance compared with wild-type (WT), whereas the drought-tolerance ability of plants was significantly inhibited by RNA interference [18]. Furthermore, many studies have demonstrated that plants respond to abiotic stresses by altering the levels of endogenous hormones, such as ABA and GA (gibberellin acid) [19,20]. Actually, NAC TFs are widely reported to participate in the signaling pathway of these hormones.…”

Section: Introductionmentioning

confidence: 99%

Identification and Expression of NAC Transcription Factors of Vaccinium corymbosum L. in Response to Drought Stress

Liang

Wang

Sun

et al. 2019

Forests

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Research Highlights: Phenotypic changes and expression profiles, phylogeny, conserved motifs, and expression correlations of NAC (NAM, ATAF1, ATAF2 and CUC2) transcription factors (TFs) in blueberry genome were detected under drought stress, and the expression patterns and functions of 12 NACs were analyzed. Background and Objectives: Blueberry is an important shrub species with a high level of flavonoids in fruit, which are implicated in a broad range of health benefits. However, the molecular mechanism of this shrub species in response to drought stress still remains elusive. NAC TFs widely participate in stress tolerance in many plant species. The characterization and expression profiles of NAC TFs were analyzed on the basis of genome data in blueberry when subjected to drought stress. Materials and Methods: Combined with the analysis of chlorophyll a fluorescence and endogenous phytohormones, the phenotypic changes of blueberry under drought stress were observed. The phylogenetic tree, conserved motifs, differently expressed genes, and expression correlation were determined by means of multiple bioinformatics analysis. The expression profiles of NACs in different organs were examined and compared through RNA-seq and qRT-PCR assay. Results: The chlorophyll a fluorescence parameters φPo, φEo, φRo, and PIabs of leaves were significantly inhibited under drought stress. ABA (abscisic acid) content noticeably increased over the duration of drought, whereas GA3 (gibberellic acid) and IAA (indole acetic acid) content decreased continuously. A total of 158 NACs were identified in blueberry genome and 62 NACs were differently expressed in leaf and root of blueberry under drought stress. Among them, 14 NACs were significantly correlated with the expression of other NAC genes. Conclusions: Our results revealed the phenotypic changes of this shrub under drought stress and linked them with NAC TFs, which are potentially involved in the process of response to drought stress.

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“…Water deficit decreased the chlorophyll index and soluble protein content of the leaf in grape [14] but increase in yield efficiency, phenolic content, anthocyanin and antioxidant activity of apple and sugar apple have been also reported [15, 16].…”

Section: Introductionmentioning

confidence: 99%

Effects of deficit irrigation and kaolin application on vegetative growth and fruit traits of two early ripening apple cultivars

et al. 2019

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Background Drought is one of the main serious problems for agriculture production which its intensity is increasing in many parts of the world, hence, improving water use efficiency is a main goal for sustainable agriculture. Results Growth indices including relative shoot length growth (SL), relative stem diameter increase (SD) and relative trunk cross sectional area growth (TCSA) measured at the start and end of the season decreased by reducing the irrigation level. Chlorophyll index (CI) was decreased at 70% crop evapotranspiration, however water use efficiency (WUE), leaf and fruit total phenolic content (TPC), and fruit anthocyanin content (AC) were among the traits that showed increment by water deficit stress in both cultivars. Shafi-Abadi cultivar showed to be more sensitive to the water stress than ‘Golab’. Kaolin treatment improved SL, SD and CI traits, but this increase was statistically significant only for SD at 5% level. Kaolin had no significant effect on yield and water use efficiency (WUE), however, it had negative effect on yield efficiency (YE). Kaolin treatments also significantly increased fruit and leaf TPC ( P < 0.01) but had no effect on leaf and fruit total antioxidant activity (AA), as well as fruit anthocyanin content (AC) and soluble proteins (SP). Conclusions Irrigation at 85% ETc showed better results than 100% and 70% ETc levels for yield attributes. It seems that the more pronounced effect of kaolin on vegetative traits but not on the fruits, might be attributed to the early ripening and harvest time of the examined cultivars.

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Changes in abscisic acid and antioxidant activity in sugar apples under drought conditions

Cited by 22 publications

References 26 publications

Chlorophyll a fluorescence as an indicator of water stress in Calophyllum brasiliense

Chlorophyll a fluorescence as an indicator of water stress in Calophyllum brasiliense

Identification and Expression of NAC Transcription Factors of Vaccinium corymbosum L. in Response to Drought Stress

Effects of deficit irrigation and kaolin application on vegetative growth and fruit traits of two early ripening apple cultivars

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