Role of peroxidase and esterase activities during cotton fiber development

Thaker, Vrinda S.; Saroop, Sant; Vaishnav, P. P.; Singh, Y. D.

doi:10.1007/bf02027383

Cited by 14 publications

(6 citation statements)

References 38 publications

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“…KUNOH et al (1978KUNOH et al ( , 1988 suggested a role for non-specific esterases in the degradation of the wax layer on the barley leaf surface. Esterases may also be involved in cell-wall degradation and elongation processes during cell growth (THAKER et al 1986). In our tests we found a high acitivity of specific esterase in ungerminated and germinated conidia of £.…”

Section: Discussionsupporting

confidence: 56%

Hydrolytic Enzymes of Ungerminated and Germinated Conidia of Erysiphe graminis DC f. sp. hordei Marchal

Wolf

1994

Journal of Phytopathology

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Activities of hydrolytic enzymes (esterase, lipase, phosphatase, protease, 1,3‐β‐glucanase, chitinase and amylase) were demonstrated in washings and extracts of ungerminated and germinated conidia of Erysiphe graminis f. sp. hordei, Marchal. No cellulase and only very little xylanase activity was detected. Considerable amounts, 65% of total conidia proteins can be extracted by shaking the conidia when the extraction medium contained non‐ionic detergent only. Different extraction procedures were used to determine enzyme distribution between exo‐ and endoconidial compartments and to evaluate the enzyme extraction efficiency from conidia. The possible physiological roles of the hydrolytic enzymes in the ungerminated as well as in the germinated conidia were discussed.

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Section: Discussionsupporting

confidence: 56%

Hydrolytic Enzymes of Ungerminated and Germinated Conidia of Erysiphe graminis DC f. sp. hordei Marchal

Wolf

1994

Journal of Phytopathology

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“…1b). Growth analysis of cotton fiber, with respect to its length and dry weight, has been reported earlier from this laboratory (Jasdanwala et al 1977, Naithani et al 1982, Thaker et al 1986. In all of these studies it was shown that the development of cotton fiber can be divided into four distinct phases: initiation, elongation, secondary thickening, and maturation, and that there was a clear-cut overlap between various phases.…”

Section: Resultsmentioning

confidence: 95%

Potential Role of Abscisic Acid in Cotton Fiber and Ovule Development

Gokani

Kumar

Thaker

1998

J Plant Growth Regul

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Fibers and ovules of a cotton cultivar (Gossypium hirsutum L. Trambak-108) were analyzed for growth and free abscisic acid (ABA) content by indirect enzyme immunoassay. An inverse correlation between fiber elongation and ABA content was observed. In the seed, accumulation of ABA was observed during secondary thickening and the maturation phase. The potential role of ABA in fiber and seed development is discussed.

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“…3d; in the present study, the values at 72-h imbibition in all the varieties has been used as a dependable variable in the regression analysis for the development of vigourrelated DNA marker(s). Esterase activity that is known to show variations in isozymes during different phases of progression in growth and development (Singh and Gupta 1978;Thaker et al 1986;Vrinda et al 1986;Pramanik et al 1996) has been studied in freshly harvested seeds (Fig. 4).…”

Section: Enzyme Activity At Sensu Stricto Germinationmentioning

confidence: 99%

Seed vigour-related DNA marker in rice shows homology with acetyl CoA carboxylase gene

Talai¹,

Sen-Mandi

2009

Acta Physiol Plant

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Germination potential, i.e. vigour manifested at sensu stricto germination, was studied in 22 rice varieties to distinguish between the genetic control for low vigour (lv) at fresh harvest and lv after ageing of seeds. For identifying seed vigour-associated DNA marker(s), correlative studies between (1) physiological parameters viz. germination of (a) unaged seeds under optimum and cold stressed condition, (b) aged seeds under optimal condition and (2) growth-associated biochemical parameters viz. alcohol dehydrogenase (ADH) and esterase (EST) activity during early germination of fresh seeds and antioxidant potential in dry embryos of fresh and aged (1 year) seeds were undertaken. ADH and EST activity as well as antioxidant potential showed positive correlation with speed of embryo emergence and early seedling growth of seeds. The reduction of antioxidant potential in aged seeds also appeared proportional to germination performance. Random amplified polymorphic DNA analysis between the varieties was correlated with the abovementioned vigour parameters, using multiple regression analysis. This led to the identification of four bands associated with the vigour trait at 99% significance level; of these, the * 900-bp DNA fragment (named as HVAC 19), through basic local alignment search tool nucleotides analysis, revealed a sequence homology with acetyl CoA carboxylase (ACCase) gene of wheat at 94% similarity level.

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Role of peroxidase and esterase activities during cotton fiber development

Cited by 14 publications

References 38 publications

Hydrolytic Enzymes of Ungerminated and Germinated Conidia of Erysiphe graminis DC f. sp. hordei Marchal

Hydrolytic Enzymes of Ungerminated and Germinated Conidia of Erysiphe graminis DC f. sp. hordei Marchal

Potential Role of Abscisic Acid in Cotton Fiber and Ovule Development

Seed vigour-related DNA marker in rice shows homology with acetyl CoA carboxylase gene

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