Cytokinin and its precursors for improving growth and yield of rice

Zahir, Z. A.; Asghar, Hafiz Naeem; Arshad, Muhammad

doi:10.1016/s0038-0717(00)00145-0

Cited by 69 publications

(48 citation statements)

References 9 publications

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“…Moreover, plants with right amount of endogenous phytohormones obtained could be used as substitute for high dosage of mineral fertilizers that have negative impact on environment. Furthermore, high level of GA 3 in the leaves in this study agrees with the report of Dong and Artceca, (1981) that GA 3 concentration in the leaves influenced photosynthesis in tomatoes and endogenous zeatin content in the rice plants increased the amount of zeatin in the root (Zahir et al, 2001). …”

Section: Endogenous Hormones Content Of Cotton Plants As Influenced Bsupporting

confidence: 92%

“…Based on these results, Van Standen (1976c);Van Standen (1977); Van Standen and Brown, (1977) and Vysot-Skaya et al (2007) reported that leaves are the site of cytokinins (Zeatin) synthesis. Conversely,cytokinin (Zeatin) produced in the root tip promote lateral stem growth (Godwin & Morris, 1979;Zahir et al, 2001). Furthermore, Gibberellic acid induced stem elongation in hydroponically grown little Marvel pea (Anderson et al, 1988).…”

Section: Cotton Hormones Content As Influenced By Exogenous Hormones mentioning

confidence: 99%

“…Gibberellic acid is an important hormone that regulates physiological activities in plant such as nutrients transport, inducing stem elongation, increase in dry matter production and weight, leaf area expansion and flowering (Wareing & Phillips, 1981;Brock, 1993;Azuma et al, 1997;Bhaskar et al, 1997;Gupta & Dutta, 2001;Takei et al, 2002;Khan & Samiullah, 2003;Shah et al, 2006). Cytokinins promote cell division and differentiation, stimulate photosynthesis (chlorophyll formation), flower production and senescence process (Hartman et al, 1981;Frankenberger & Arshad, 1995;Arshad & Frankenberger, 1998;Zahir et al, 2001). Findings of Siobhanand Peter (2003) revealed that GA 3 and auxin interacted together to stimulate cell elongation.…”

Section: Introductionmentioning

confidence: 99%

“…Previous studies have shown that exogenous application of synthetic cytokinins significantly affected nutrient uptake by plants both in soil and nutrient culture by direct action on the roots (Stoyanov & Drev, 1978;Maksimov et al, 1979). Increased in NPK concentration of straw and grain by application of cytokinin caused a tremendous increase in yield of rice (Zahir et al, 2001). …”

Section: Introductionmentioning

confidence: 99%

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Determination of Endogenous Hormones Content in Cotton Varieties (Gossypiumhirsutum) as Influenced by Phosphorus and Potassium Nutrition

Onanuga¹,

Ping-an²,

Adl³

2012

JAS

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Two experiments were conducted to evaluate the endogenous hormones content of cotton plants grown hydroponically, and supplied with varying levels of phosphorus (P) and potassium (K) mineral nutrients in the first cropping. In the second cropping, varying levels of exogenous indole-3-acetic acid (IAA), gibberellic acid (GA 3 ) and zeatin (Z) and their combinations were applied to high level of PK in the hydroponic. In the first experiment, low K and low P treated plants had higher content of gibberellic acid (GA 3 ) in the leaves than high PK treated plants, and low K treated plants also produced more Zeatin (Z) in the leaves than either low P or high PK treated plants. Furthermore, low K treated plants had higher Zeatin (Z) content in the root than either low P or high PK treated plants. However, the two cotton varieties expressed different hormones content in the leaves, stem and root. In the second experiment, GA 3 concentration was highest in the cotton stem treated to IAA x GA 3 x Z. Moreover, Zeatin content in the leaves, stem and root was highest in the cotton treated to IAA x GA 3 x Z and 2IAA x 2GA 3 x 2Z for leaves, IAA x GA 3 x Z for stem and Z, IAA x 2GA 3 x Z for root. Nevertheless, two cotton varieties possessed different hormones content in the leaves, stem and root. In general, there was no relationship between the first cropping and second cropping. The results demonstrated influence of exogenous hormones application in altering the endogenous hormones content of cotton plants.

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Section: Endogenous Hormones Content Of Cotton Plants As Influenced Bsupporting

confidence: 92%

Section: Cotton Hormones Content As Influenced By Exogenous Hormones mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Determination of Endogenous Hormones Content in Cotton Varieties (Gossypiumhirsutum) as Influenced by Phosphorus and Potassium Nutrition

Onanuga¹,

Ping-an²,

Adl³

2012

JAS

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“…Wang et al (2001) [14] clearly defined that ABA and JA would be elevated in response to salinity, whereas other hormones as indole-3-acetic acid (IAA) and salicylic acid (SA) were lowered. For example, the exogenous application of PGRs, auxins [15], gibberellins [16], cytokinins [17] produces improves plant seed germination, growth, development and seed yields and yield quality under salinity stress [18]- [22].…”

Section: Introductionmentioning

confidence: 99%

The Potential Role of Osmotic Pressure to Exogenous Application of Phytohormones on Crop Plants Grown under Different Osmotic Stress

El-Samad¹

2016

AJPS

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The osmotic pressure represented as a sign of plant tolerance or sensitive to salinity stress. In the following plants, the increase in OP seems to be a manner of defense mechanism to survive. OP increased in shoots of maize, shoot and root of wheat and cotton plants was concomitant with shoot soluble sugar, root soluble protein and shoot and root amino acids of maize plants. However, in wheat the increase in OP was related with increase of root soluble sugar and protein of shoots and roots. In cotton plants, the elevation of OP was run parallel with increase soluble sugar of shoots and roots, shoot soluble protein and root amino acids. The increase in OP was related with a marked and significant reduction in the water content of these plants. However, the decrease in OP of shoot and root of broad bean was related with the reduction of shoots and roots soluble sugar, protein and root amino acids of broad bean. While the OP becomes more or less unchanged in shoots and tended to decrease in root of parsley plants, this concomitant with unchanged trend in the shoots amino acids and reduction in root soluble sugar and root amino acids. Run with previous trend values of OP and metabolites of parsley plants were related with stable values in shoot water content and reduction in root water content. With GA3 and kinetin treatments mostly increase the values OP which parallel with increase and soluble sugar, soluble protein and amino acids contents of shoots and roots of maize, wheat, cotton, broad bean and parsley plants with NaCl increasing. This related with increase water uptake by roots in these plants. The results indicated that kinetin had a more effective to shoot maize, both organs of wheat, broad bean and parsley plants in response to salinity stress while GA3 was more effective on cotton plants especially at higher levels of salinity. Thus plants strategy differed in their tolerance to salinity stress according to their species and differed also according to the different organs of the same plants and kinetin treatment induced highly positively affect than GA3 treatments. H. M. Abd El-Samad 938 KeywordsOsmotic Pressure, GA3 and Kinetin, NaCl

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Plant Probiotics for Nutrient Acquisition by Agriculturally Important Grasses: A Comprehensive Review of the Science and the Application

Swift

Denton

Melino

2019

Annual Plant Reviews Online

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Intensification of agricultural land and the overuse of inorganic fertilisers has led to soil acidification, depletion of organic matter, and environmental pollution. Approaches to protect soil health, including the enhancement of microbial diversity, are integral to improving crop productivity and food security. Metagenomics has rapidly improved our understanding of soil microbial diversity and function, while genetic techniques have helped to dissect the complex signal exchange between microorganisms and plants. This article presents and evaluates reported beneficial effects of plant growth‐promoting bacteria (PGPB), focussing on those capable of mobilising or solubilising nutrients and/or stimulating plant growth when applied to agriculturally important grasses. The agricultural industry has capitalised on these scientific advancements, generating microbial formulations for specific crop responses. However, scientific methodologies must be applied in order to overcome inherent limitations of many PGPBs including their inability to be cultured, their poorly defined or multiple modes of action, a low level of integration with the crop partner, and an unpredictability in translating beneficial plant responses to the field. Novel approaches such as engineered rhizospheres, enhancing endophytic systems, cereal nodule development, and the use of inoculant consortiums will be necessary to sustain growth in the biofertiliser industry.

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Cytokinin and its precursors for improving growth and yield of rice

Cited by 69 publications

References 9 publications

Determination of Endogenous Hormones Content in Cotton Varieties (Gossypiumhirsutum) as Influenced by Phosphorus and Potassium Nutrition

Determination of Endogenous Hormones Content in Cotton Varieties (Gossypiumhirsutum) as Influenced by Phosphorus and Potassium Nutrition

The Potential Role of Osmotic Pressure to Exogenous Application of Phytohormones on Crop Plants Grown under Different Osmotic Stress

Plant Probiotics for Nutrient Acquisition by Agriculturally Important Grasses: A Comprehensive Review of the Science and the Application

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