Enzymatic activity and physico-chemical changes of terminal bud in rain-fed fig (Ficus carica L. ‘Sabz’) during dormant season

Sedaghat, Sahar; Gaaliche, Badii; Rahemi, Majid; Zare, Hamid R.; Jafari, M

doi:10.1016/j.hpj.2021.03.010

Cited by 9 publications

(6 citation statements)

References 49 publications

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“…The fsd1 knockout mutant in Arabidopsis significantly suppressed the development of the lateral roots (Dvořák et al, 2021). NtSOD was expressed at a relatively high level in the terminal bud of tobacco, consistent with the continuous increase in SOD activity observed in buds of Ficus carica during the dormancy to germination period (Sedaghat et al, 2022). Briefly, the expression of tobacco NtSOD family genes show spatiotemporal specificity and play an important role in different tissues and organs and developmental stages.…”

Section: Discussionsupporting

confidence: 61%

The Superoxide Dismutase Gene Family in Nicotiana tabacum: Genome-Wide Identification, Characterization, Expression Profiling and Functional Analysis in Response to Heavy Metal Stress

Huo

et al. 2022

Front. Plant Sci.

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Superoxide dismutases (SODs) play an important role in protecting plants against ROS toxicity induced by biotic and abiotic stress. Recent studies have shown that the SOD gene family is involved in plant growth and development; however, knowledge of the SOD gene family in tobacco is still limited. In the present study, the SOD gene family was systematically characterized in the tobacco genome. Based on the conserved motif and phylogenetic tree, 15 NtSOD genes were identified and classified into three subgroups, including 5 NtCSDs, 7 NtFSDs and 3 NtMSDs. The predicted results of the transport peptide or signal peptide were consistent with their subcellular localization. Most NtSOD genes showed relatively well-maintained exon-intron and motif structures in the same subgroup. An analysis of cis-acting elements in SOD gene promoters showed that NtSOD expression was regulated by plant hormones, defense and stress responses, and light. In addition, multiple transcription factors and miRNAs are predicted to be involved in the regulation of NtSOD gene expression. The qPCR results indicated specific spatial and temporal expression patterns of the NtSOD gene family in different tissues and developmental stages, and this gene family played an important role in protecting against heavy metal stress. The results of functional complementation tests in the yeast mutant suggested that NtCSD1a, NtFSD1e and NtMSD1b scavenge ROS produced by heavy metal stress. This study represents the first genome-wide analysis of the NtSOD gene family, which lays a foundation for a better understanding of the function of the NtSOD gene family and improving the tolerance of plants to heavy metal toxicity.

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Section: Discussionsupporting

confidence: 61%

The Superoxide Dismutase Gene Family in Nicotiana tabacum: Genome-Wide Identification, Characterization, Expression Profiling and Functional Analysis in Response to Heavy Metal Stress

Huo

et al. 2022

Front. Plant Sci.

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“…On the other hand, CAT activity was lower in the dormancy period and significantly increased at the budburst. These results are in agreement with studies developed in dormant buds of apple [47] and fig trees [15], where higher APX and POD activities and lower CAT activity during dormancy until bud break were observed. An increase in CAT activity occurred in the absence of SOD, indicating that SOD is not the primary enzyme for H 2 O 2 formation, as noted by Abassi et al [47].…”

Section: Discussionsupporting

confidence: 93%

“…In dormant buds, starch concentration was higher than that of soluble sugars, a tendency that was manifestly reversed in the budburst (Figure 4, Table 2). Studies on apple [13,52], walnut [53], and fig trees [15] observed a reduction in the starch content and a simultaneous enhancement in the total soluble sugar during endodormancy. These findings are related to the carbohydrate metabolism that occurs between dormancy, dormancy break, and budburst, as a result of cold hardiness.…”

Section: Discussionmentioning

confidence: 99%

“…This stage involves metabolic and physiological changes-namely, in respiration rate, growth regulators, carbohydrate metabolism, and tissue water content that can intensify the formation of reactive oxygen species (ROS) [10]. In recent years, biochemical mechanisms related to dormancy and budburst in different regions and plant species such as walnut [11], apricot [12], apple [13], grapevine [14], and figs [15] have been reported. All these studies describe changes in the activity of antioxidant enzymes (CAT and APX), sugar and starch content, and endogenous hormones such as GA 3 .…”

Section: Introductionmentioning

confidence: 99%

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Biochemical Changes in Vitis vinifera Buds between Dormancy and Forced Bursting: A Case Study of Three Portuguese White Varieties

et al. 2022

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The transition between the dormancy and budburst is accompanied by physiological and biochemical changes, which include variations in the carbohydrates, enzymatic activity, as well as hormones present inside the buds. The present study aimed to evaluate the biochemical changes that occur in dormant buds and forced bursting of three Vitis vinifera L. white varieties (Alvarinho, Fernão-Pires, and Loureiro) from two vineyards located in the Vinhos Verdes Demarcated Region, NW Portugal. For this purpose, the contents of malondialdehyde (MDA), proline, carbohydrates, and gibberellic acid (GA3), as well as antioxidant enzymes activity were analysed. The results showed that the MDA, proline, total soluble sugars, and GA3 contents tended to be higher at budburst. In contrast, the starch content was higher at dormancy. The enzymatic activities of ascorbate peroxidase (APX), peroxidase (POX), and superoxide dismutase (SOD) were lower at budburst, compared with dormancy, while the reverse was observed in catalase (CAT). Significant differences were also observed between varieties for most biochemical parameters analysed, with the exception of CAT activity. Alvarinho stood out from other varieties for presenting higher MDA, proline, soluble sugars, and GA3 content, while Fernão-Pires displayed higher values of APX and POX activities and starch content. To our knowledge, the present work is the first attempt to examine the biochemical changes in dormant buds and bursting, which determine the vegetative and reproductive continuity of grapevines. This information contributes to better vineyard management, particularly important in light of the climate change scenarios, which can affect the biochemical mechanisms of the buds and compromise the yield and quality of grapevines.

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“…Carbohydrate reserves are also used as an indicator of bud break in many fruit trees ( Kaufmann and Blanke, 2017 ). In a recent study conducted on the fig cultivar ‘Sabz’, soluble sugars decreased during bud break, bringing about new leaf development and shoot growth in spring ( Sedaghat et al., 2022 ). These carbohydrates were possibly transformed into structural forms, resulting in new organ formation (leaves and stems) and an increase in plant volume ( Sedaghat et al., 2022 ).…”

Section: Discussionmentioning

confidence: 99%

Metabolomics and genetics of reproductive bud development in Ficus carica var. sativa (edible fig) and in Ficus carica var. caprificus (caprifig): similarities and differences

et al. 2023

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In figs, reproductive biology comprises cultivars requiring or not pollination, with female trees (edible fig) and male trees (caprifig) bearing different types of fruits. Metabolomic and genetic studies may clarify bud differentiation mechanisms behind the different fruits. We used a targeted metabolomic analysis and genetic investigation through RNA sequence and candidate gene investigation to perform a deep analysis of buds of two fig cultivars, ‘Petrelli’ (San Pedro type) and ‘Dottato’ (Common type), and one caprifig. In this work, proton nuclear magnetic resonance (1H NMR-based metabolomics) has been used to analyze and compare buds of the caprifig and the two fig cultivars collected at different times of the season. Metabolomic data of buds collected on the caprifig, ‘Petrelli’, and ‘Dottato’ were treated individually, building three separate orthogonal partial least squared (OPLS) models, using the “y” variable as the sampling time to allow the identification of the correlations among metabolomic profiles of buds. The sampling times revealed different patterns between caprifig and the two edible fig cultivars. A significant amount of glucose and fructose was found in ‘Petrelli’, differently from ‘Dottato’, in the buds in June, suggesting that these sugars not only are used by the ripening brebas of ‘Petrelli’ but also are directed toward the developing buds on the current year shoot for either a main crop (fruit in the current season) or a breba (fruit in the successive season). Genetic characterization through the RNA-seq of buds and comparison with the literature allowed the identification of 473 downregulated genes, with 22 only in profichi, and 391 upregulated genes, with 21 only in mammoni.

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Enzymatic activity and physico-chemical changes of terminal bud in rain-fed fig (Ficus carica L. ‘Sabz’) during dormant season

Cited by 9 publications

References 49 publications

The Superoxide Dismutase Gene Family in Nicotiana tabacum: Genome-Wide Identification, Characterization, Expression Profiling and Functional Analysis in Response to Heavy Metal Stress

The Superoxide Dismutase Gene Family in Nicotiana tabacum: Genome-Wide Identification, Characterization, Expression Profiling and Functional Analysis in Response to Heavy Metal Stress

Biochemical Changes in Vitis vinifera Buds between Dormancy and Forced Bursting: A Case Study of Three Portuguese White Varieties

Metabolomics and genetics of reproductive bud development in Ficus carica var. sativa (edible fig) and in Ficus carica var. caprificus (caprifig): similarities and differences

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