A comparative effect of IAA and 4-Cl-IAA on growth, nodulation and nitrogen fixation in Vigna radiata (L.) Wilczek

Ali, Barket; Hayat, Shamsul; Hasan, S. Q.; Ahmad, Aqil

doi:10.1007/s11738-007-0088-4

Cited by 29 publications

(13 citation statements)

References 21 publications

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“…Nevertheless, with a higher maximum stimulation of 101% and a broader 3.2‐fold dose increase in the lettuce assay, compounds like PCIB may hold a more favourable potential for crop enhancement and may allow using low doses that may under no circumstances turn inhibitory. In contrast to the sesquiterpene lactones and PCIB, glyphosate and the natural auxin indole‐3‐acetic acid (IAA) do not stimulate root elongation under standard conditions in the lettuce assay, although biomass growth‐enhancing effects have been previously observed in other test systems for both compounds (Ali et al. , 2008a,b; Cedergreen, 2008a,b; Cedergreen et al.…”

Section: The ‘Potential Portfolio’ Of Herbicide Hormesismentioning

confidence: 98%

Herbicide hormesis – can it be useful in crop production?

Belz

Cedergreen

Duke³

2011

Weed Research

111

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Belz RG, Cedergreen N & Duke SO (2011). Herbicide hormesis – can it be useful in crop production? Weed Research51, 321–332. Summary The yield‐enhancing effects of some pesticides may change the focus of their use in crop production, from crop protection to crop enhancement. While such beneficial uses of pesticides are specifically en vogue for fungicides and seed treatments, the use of herbicides for crop enhancement has not yet been realised. The potential for improving crop production by low‐dose, stimulatory effects of herbicides has been proposed, and reports of 10–25% efficiency of improving certain plant traits under field conditions seem promising. However, past attempts to make use of herbicide hormesis, the term for this effect, have been largely unsuccessful. The reasons for this may be manifold, but the lack of understanding of the principles and mechanisms of this low‐dose phenomenon in plants may have contributed to the often claimed lack of adequate predictability for commercial use. Thanks to the research progress recently made in this area, we are now better able to understand the principles of herbicide hormesis and its potential for crop enhancement. Therefore, this review highlights the potential of phytotoxins to induce plant hormesis and the factors influencing its expression. Based on this, possible practical constraints and consequences for the portfolio of uses for herbicides are discussed, along with undesired but apparent hormetic side effects of herbicides.

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Section: The ‘Potential Portfolio’ Of Herbicide Hormesismentioning

confidence: 98%

Herbicide hormesis – can it be useful in crop production?

Belz

Cedergreen

Duke³

2011

Weed Research

111

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“…Increases in nitrogenase and leghaemoglobin content up to 32% and 45% were observed at 45 days after sowing when plants were treated with 10 −8 M exogenous IAA as compared with untreated plants (Ali et al . 2008). Greater nitrogenase and leghaemoglobin production in the nodules resulted in higher N 2 fixation as measured by acetylene reduction activity in nodules induced by IAA overproducing rhizobia compared with the wild‐type strain (Kaneshiro and Kwolek 1985).…”

Section: Indole‐acetic‐acid‐producing Nermentioning

confidence: 99%

Mechanisms in plant growth‐promoting rhizobacteria that enhance legume–rhizobial symbioses

Alemneh

Zhou

Ryder

et al. 2020

J. Appl. Microbiol.

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Nitrogen fixation is an important biological process in terrestrial ecosystems and for global crop production. Legume nodulation and N 2 fixation have been improved using nodule-enhancing rhizobacteria (NER) under both regular and stressed conditions. The positive effect of NER on legume-rhizobia symbiosis can be facilitated by plant growth-promoting (PGP) mechanisms, some of which remain to be identified. NER that produce aminocyclopropane-1carboxylic acid deaminase and indole acetic acid enhance the legume-rhizobia symbiosis through (i) enhancing the nodule induction, (ii) improving the competitiveness of rhizobia for nodulation, (iii) prolonging functional nodules by suppressing nodule senescence and (iv) upregulating genes associated with legume-rhizobia symbiosis. The means by which these processes enhance the legume-rhizobia symbiosis is the focus of this review. A better understanding of the mechanisms by which PGP rhizobacteria operate, and how they can be altered, will provide opportunities to enhance legume-rhizobial interactions, to provide new advances in plant growth promotion and N 2 fixation. Highlights • ACC deaminase and IAA synthesis enhance nodule formation. • ACC deaminase and IAA synthesis improve the competitiveness of rhizobia for nodule induction. • IAA synthesis enhances N 2 fixation by upregulating the expression of genes associated with legume-rhizobia symbioses. • ACC deaminase prolongs nodule function by delaying nodule senescence. • ACC deaminase can reduce the negative influence of very high IAA on nodule induction.

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“…It was confirmed by other studies that plant growth regulators containing synthetic hormones stimulate root system growth too, increasing nutrient uptake form the soil (Hwang and Sakakibara, 2006). Ali et al (2008) reported that auxins are leading factors in this process, acting as signals informing about the state of physiological processes in cells and about growing demand for nutrients, this way attracting them. Thus, high quantities of soil nutrients are absorbed by the roots, and big amounts of them are transported from vegetative to generative parts.…”

Section: Introductionmentioning

confidence: 63%

The Effect of Synthetic Growth Regulators on Selected Parameters of Medicago X Varia T. Martyn and Trifolium Pratense L. Nutritional Value

Sosnowski¹,

Król²

2018

Appl. Ecol. Env. Res.

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The aim of the paper is to study the effects of auxin and cytokinin, synthetic growth regulators, on selected parameters of hybrid alfalfa and red clover nutritional value. The experiment was conducted at the experimental facility of Siedlce University of Natural Sciences and Humanities between 2014 and 2016. In the autumn of 2014 plastic cylinders with no bottom, 40 cm high and with the diameter of 36 cm, were sunk 30 cm deep into the ground, with spacing of 0.8 × 0.8 m. They were filled with the soil of the anthropogenic order. Experimental factors: plant species -hybrid alfalfa and red clover, growth regulator -control (distilled water), indole-3-butric acid (auxin), 6-benzyloaminopuryn (cytokinin), indole-3-butric acid + 6-benzylaminopuryn. After plants in each cylinder were harvested their chemical analysis was carried out. Dry matter digestibility (%) and total protein, crude fibre concentration in dry matter (g kg -1 ) was determined with the NIRS method using the Buchi NIRFlex N-500 spectrometer. The results of the multi-factor experiment with 24 experimental units were processed statistically using repeated measures analysis of variance. Growth regulators affected the content of protein and crude fibre in plant matter in different wayes. Cytokinin and a mixture of hormones reduced the concentration of protein relative to the control, but fibre share increased. Auxin had no significant effect on these features.

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A comparative effect of IAA and 4-Cl-IAA on growth, nodulation and nitrogen fixation in Vigna radiata (L.) Wilczek

Cited by 29 publications

References 21 publications

Herbicide hormesis – can it be useful in crop production?

Herbicide hormesis – can it be useful in crop production?

Mechanisms in plant growth‐promoting rhizobacteria that enhance legume–rhizobial symbioses

The Effect of Synthetic Growth Regulators on Selected Parameters of Medicago X Varia T. Martyn and Trifolium Pratense L. Nutritional Value

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