Indole-3-acetic acid: A widespread physiological code in interactions of fungi with other organisms

Fu, Shih Feng; Wei, Jyuan Yu; Chen, Hung Wei; Liu, Yen Yu; Lu, Hsiao-feng; Chou, Jui Yu

doi:10.1080/15592324.2015.1048052

Cited by 251 publications

(175 citation statements)

References 70 publications

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“…Studies have previously portrayed that auxins, such as IBA assist the colonization of a host by increasing the number of lateral roots as preferred colonization sites for the fungi during early growth development (Jentschel et al, 2007;Fu et al, 2015). The inoculum used in this study was processed from rhizospheric soil instead of using commercially available arbuscular mycorrhizal fungi.…”

Section: Discussionmentioning

confidence: 99%

Influence of Arbuscular Mycorrhizal Fungi on Rooting Ability of Auxin Treated Stem Cuttings of Dalbergia melanoxylon (Guill and Perr.)

Amri¹

2015

Research J. of Botany

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In efforts to optimize vegetative propagation of Dalbergia melanoxylon, the effects of inoculation of Arbuscular Mycorrhizal Fungi (AMF) on rooting ability of D. melanoxylon stem cuttings treated with auxin Indole-3-Butyric Acid (IBA) were investigated. Three inoculum levels of AMF namely control, 1:1 and 1:2 (v/v) ratio of inoculum to propagation substrate, respectively and two levels of cutting types designated as middle and basal cutting positions were used. Rooting parameters in terms of rooting percentage, root number, root length and root dry weight were evaluated. Analysis of variance revealed that the effect of AMF inoculation was significant (p<0.001) only for percent rooting and root dry weight among the rooting parameters evaluated. The effect of cutting type and the interactive effect of inoculation and cutting type were insignificant for all studied rooting parameters. Comparisons of means by Duncan's Multiple Range Test (DMRT) for the different treatments revealed that the quantity of inoculum significantly (p<0.05) influenced high performance in all rooting parameters evaluated. The highest percentages in rooting was (67.28%) for the cuttings from basal position. The study has revealed a strong AMF influence on rooting ability of auxin treated stem cuttings in D. melanoxylon. It was concluded that for vegetative propagation, AMF inoculum should be used for auxin treated cuttings to produce high quality planting stock material for the afforestation and conservation programme for D. melanoxylon.

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Section: Discussionmentioning

confidence: 99%

Influence of Arbuscular Mycorrhizal Fungi on Rooting Ability of Auxin Treated Stem Cuttings of Dalbergia melanoxylon (Guill and Perr.)

Amri¹

2015

Research J. of Botany

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“…From these results, the IAA effects depended on the plant species. Similarly, the yeast stage of the plant pathogenic fungus Ustilago esculenta enhancing the growth of hair roots of Arabidopsis thaliana (dicot) and reducing that of primary roots, enhanced hair roots also in Nicotiana benthamiana (dicot) (Fu et al (). Increased fibrous root length of maize (monocot) was correlated with the presence of the yeast Williopsis saturnus in the roots (Nassar et al ).…”

Section: Discussionmentioning

confidence: 99%

The plant growth‐promoting potential of the mesophilic wood‐rot mushroomPleurotus pulmonarius

2019

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Aims To demonstrate the plant growth‐promoting potential of a wood‐decay mushroom. Methods and Results A wild strain of a white rot fungus (Pleurotus pulmonarius) was found to convert 10 mmol l−1 L‐tryptophan (TRP) to approximately 15 μg ml−1 indole‐3‐acetic acid (IAA) under the optimal growth conditions of 30°C and pH 5 for 15 days. Results of gas chromatography–mass spectrometry indicated IAA synthesis through the indole‐3‐pyruvic acid pathway when using cellulose as a sole carbon source. The mycelium as well as the culture filtrate promoted the growth and chlorophyll content of seedlings. In a monocotyledonous plant (rice), the number of lateral roots was increased experimentally, whereas in a dicotyledonous plant (tomato), the fungus led to an increased length of shoots and roots. Conclusions TRP‐dependent IAA production was demonstrated for the first time for P. pulmonarius and may be responsible for enhancing plant growth in vitro. Significance and Impact of the Study Synthesis of IAA as the most prevalent phytohormone in plants has been demonstrated for soil microfungi. Pleurotus pulmonarius is reported as an IAA‐producing wood‐decay macrofungus. The higher temperature optimum of P. pulmonarius isolated from subtropical environment compared to other Pleurotus species from temperate regions makes it more suitable for application in subtropical/tropical regions.

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“…Data suggest that IAA regulates physiologic response and gene expression in bacteria, fungi, microalgae and plants. Although, these organisms may have evolved independently, the subsequent evolution of IAA formation culminates in natural selection hypothesis of a predilection of IAA as an expansive physiological code in these microbes and their concomitant interactions (Fu et al, 2015).…”

Section: Metabolic Factors and Hormonesmentioning

confidence: 99%

Comments on bacterial and fungal interactions in medicine, agriculture and the environment

Chukwuma¹

2017

Int. J. Adv. Res. Biol. Sci

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Bacteria and fungi are associated via interactions dependent on diverse modalities of molecular communications for their development and functionalities. The resultant impact is the discrete contributions to biogeochemical cycles and biotechnological processes. Interactions among bacteria, fungi and other organisms with inter alia the environment in medicine, forestry, agriculture, and food can pose pronounced influence on the colonization, pathogenesis and survival of species. There are several reports of bacterial-fungal interactions which are important in nature but whose significance remains to be established. This article is concerned with a review of some examples, with descriptive analysis related to conceptual and operational difficulties associated with them.

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Indole-3-acetic acid: A widespread physiological code in interactions of fungi with other organisms

Cited by 251 publications

References 70 publications

Influence of Arbuscular Mycorrhizal Fungi on Rooting Ability of Auxin Treated Stem Cuttings of Dalbergia melanoxylon (Guill and Perr.)

Influence of Arbuscular Mycorrhizal Fungi on Rooting Ability of Auxin Treated Stem Cuttings of Dalbergia melanoxylon (Guill and Perr.)

The plant growth‐promoting potential of the mesophilic wood‐rot mushroomPleurotus pulmonarius

Comments on bacterial and fungal interactions in medicine, agriculture and the environment

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