Peroxidase-regulated elongation of segments from peanut hypocotyls

Zheng, Xiaodong; Huystee, Robert B. van

doi:10.1016/0168-9452(92)90023-f

Cited by 144 publications

(68 citation statements)

References 25 publications

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“…POXinduced lignification of cell walls might be the reason for slow growth by cell elongation (Wardrop 1964). Similar findings were observed in mung beans (Goldberg et al 1987) and peanuts (Zheng and Van Huystee 1992). The increased activity of POX might be a cause for tolerance level in submergence-tolerant genotypes.…”

supporting

confidence: 71%

Relative proportion of antioxidative enzyme activity in locally grown Indian rice cultivars (Oryza sativaL.) under submergence condition

Anandan¹,

Arunachalam²

2012

Journal of Plant Interactions

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Breeders are trying to develop true submergence-tolerant genotypes for lowland irrigated and/or rainfed areas, where rice is often affected by short-term submergence. This study was conducted to evaluate the submergence tolerance, response of antioxidative defense systems to hypoxic and re-aerated conditions, and growth and survival percentage among 19 rice genotypes. The rice seedlings submerged into concrete tanks for 10 days exhibited decreased activities of antioxidant enzymes. The antioxidant enzymes, superoxide dismutase, catalase, and ascorbate peroxidase increased, whereas polyphenol oxidase and glutathione reductase decreased in subsequent re-aerated situation in tolerant genotypes. On the other hand, the activities of enzymes decreased greatly in susceptible genotypes under hypoxic and re-aerated conditions. Complete submergence of the seedling increased the plant height of 12 genotypes. However, it decreased the dry matter production. Genotypes having better root and shoot growth maintained higher dry weight and exhibited better survival than did others. The results indicated that genotypes tolerant of flash flood maintained higher activities of antioxidant enzymes and dry matter accumulation to protect against postanoxic injury.

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supporting

confidence: 71%

Relative proportion of antioxidative enzyme activity in locally grown Indian rice cultivars (Oryza sativaL.) under submergence condition

Anandan¹,

Arunachalam²

2012

Journal of Plant Interactions

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“…6) The light-mediated inhibition of hypocotyl elongation is a central feature of photomorphogenesis in dicotyledonous seedlings. The hypothesis has been proposed that this response is mediated by a stiffening of the cell wall in the elongation zone of the hypocotyl by peroxidase-catalyzed cross-linking of load-bearing wall polymers (Goldberg et al, 1987;Angelini et al, 1990;Zheng and Van Huystee, 1992). In this context it was of interest to check whether light has a promoting effect on the level of H 2 O 2 in the elongation zone of the hypocotyl.…”

Section: Example 3: Localization Of H2o2 and Lignin In The Hypocotyl mentioning

confidence: 99%

Histochemical Demonstration and Localization of H2O2 in Organs of Higher Plants by Tissue Printing on Nitrocellulose Paper

Schöpfer

1994

Plant Physiol.

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A sensitive tissue-print assay for the detection and histological localization of HzOZ in freshly cut organ sections was developed by impregnating nitrocellulose paper with a mixture of K I and soluble starch. HZOa transferred from the cut surface of the section to the dried paper forms I?, which can be visualized by the intensely colored I,-starch complex. The detection limit of the assay is in the Hz02 is a constituent of oxidative plant metabolism. It is a product of peroxisomal and chloroplastic oxidative reactions (Elstner, 1987(Elstner, , 1991 and it is probably a substrate for apoplastic cross-linking of phenolic compounds by peroxidase in the formation of cell-wall polymers such as lignin, suberin, or insoluble Hyp-rich glycoproteins (Fry, 1986 Frew et al., 1983). A procedure based on the oxidation of KI to 12 by H202, visualized by the formation of the blue-black 12-starch complex (Smith, 19701, has recently been used for a histochemical assay of H202 in freshly cut plant tissue sections (Olson and Vamer, 1993;Varner, 1993). Using this reaction I have developed a sensitive tissueprinting assay for the rapid detection and localization of H202 in higher plant organs. The present communication describes the application of this assay to several problems related to the physiological function of H202 in plant growth and development. MATERIAIS AND METHODSSeedlings of soybean (Glycine ma% L. cv Kalmit), sunflower (Helianthus annuus L.), garden bean (Phaseolus vulgaris L. cv Saxa), pea (Pisum sativum L. cv Alaska), and cucumber (Cucumis sativus L. cv Bidretta) were grown in closed plastic boxes on wet vermiculite at 25OC in darkness or continuous white fluorescent light (9 W m-'). Other plants were purchased at local markets.H202 printing paper was prepared by soaking strips of nitrocellulose membrane (BA 83, 0.2 pm; Schleicher & Schuell, Dassel, Germany) with a solution containing 100 g L-' soluble starch (Merck, Darmstadt, Germany) and 0.5 mo1 L-' KI in distilled water. The starch was solubilized by boiling before KI was added to the cooled solution. The strips were dried in a stream of warm air (3OOC) and stored in the dark before use. To minimize background staining by autoxidation of KI, the reagent solution was used no longer than 5 h and the printing paper no longer than 2 h after preparation.Tissue printing was performed at room temperature (18-2OOC) essentially as described by Cassab and Varner (1989

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“…Catalase mediates the cleavage of H 2 O 2 evolving O 2 (Scandalios, 1993) and peroxidase reduces H 2 O 2 to H 2 O using several reductants available to the cells (Foyer et al, 1994). Plant peroxidases, a ubiquitous class of protein, are involved in several different physiological functions including wound healing, biosynthesis of cell walls and growth regulation (Zheng and Van Hyystee, 1992). The phosphatases are a diverse class of enzymes.…”

Section: Discussionmentioning

confidence: 99%

Plant growth promoting capability of Azotobacter as mono and mix culture on Vigna radiata

Kiran¹,

Afrasayab²,

Abbas³

et al. 2012

Afr. J. Microbiol. Res.

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In the present study mono and mixed culture bacterial combinations of Azotobacter were used to inculcate Vigna radiata seeds. In general, bacterial inoculations (mono and mixed cultures) promoted seed germination, early growth parameters, auxin content, soluble protein content, peroxidase and acid phosphatase activity relative to non-inoculated control seedlings. Increase of (23%) as well as decrease (6.8%) in the root length were observed with bacterial inoculations relative to non-inoculated seedlings. About 20.07% enhancements in fresh weight and 62% enhancement in dry weight was observed in case of bacterial inoculations. Among the monoculture Ab-4(A3) induced pronounced growth stimulator effects, mixed culture combinations B6, B7, and B10 showed pronounced synergistic effects relative to respective monocultures, while B2 exhibited negative in majority of the parameters being studied.

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Peroxidase-regulated elongation of segments from peanut hypocotyls

Cited by 144 publications

References 25 publications

Relative proportion of antioxidative enzyme activity in locally grown Indian rice cultivars (Oryza sativaL.) under submergence condition

Relative proportion of antioxidative enzyme activity in locally grown Indian rice cultivars (Oryza sativaL.) under submergence condition

Histochemical Demonstration and Localization of H2O2 in Organs of Higher Plants by Tissue Printing on Nitrocellulose Paper

Plant growth promoting capability of Azotobacter as mono and mix culture on Vigna radiata

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