An inoculum of endophytic fungi for improved growth of a traditional ricevariety in Sri Lanka

Wijesooriya, W.A.D.K.; Deshappriya, N.

doi:10.22271/tpr.2016.v3.i3.063

Cited by 21 publications

(26 citation statements)

References 21 publications

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“…Method I-Seedling Inoculation-plate method: Seedlings were inoculated with endophytes Trichoderma sp.1, Trichoderma sp.2 and Chaetomium sp. by using the plate method (Wijesooriya & Deshappriya 2016) and incubated at room temperature. Seedlings were placed on fresh PDA plates as a control.…”

Section: Tests For the Effect Of Endophytes On Brown Spot Disease Incidence Under Greenhouse Conditionsmentioning

confidence: 99%

“…Endophytic fungi are also reported to enhance the growth of plants by several mechanisms including the release of auxins, gibberellin and cytokinin (You et al 2012). Although endophytic fungi of rice have been reported to enhance growth and yield of a number of rice varieties (Atugala & Deshappriya 2015, Wijesooriya & Deshappriya 2016, the endophytic fungal assemblage of the rice variety Ld368 and their effect on brown spot disease development and plant growth has not been reported in Sri Lanka previously.…”

Section: Introductionmentioning

confidence: 99%

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Effect of fungal endophytes of rice variety Ld 368 on growth and brown spot disease incidence of rice

Priyadarshani¹,

Deshappriya²,

Sandamali³

2018

Trop. Plant Res.

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Use of chemicals for growth enhancement and disease control in plants has resulted in hazardous influences to the environment and human health. Therefore, less harmful methods should be implemented and the possibility of using microbes for this purpose has been investigated. Endophytic fungal assemblages have been known to enhance plant growth and decrease disease incidence in some crops including rice and thus can be used as an alternative to chemicals. Therefore, this study was aimed to isolate the endophytic fungal communities associated with the rice variety Ld 368 with a view to examine the possibility of using them for plant growth enhancement and management of brown spot disease incidence. Brown spot disease caused by Bipolaris oryzae is one of the major rice diseases prevalent in Sri Lanka. Healthy plant parts of variety Ld 368 were used for the isolation of endophytes. 31 endophytic fungal species were isolated, and eight of the most frequently isolated fungal species were tested for their ability to inhibit the growth of B. oryzae using dual culture assays. From the fungal species tested, Trichoderma sp.1, Trichoderma sp.2 and Chaetomium sp. inhibited the colony growth of Bipolaris Oryzae significantly (P ≤ 0.05) under in-vitro conditions. Based on the results of in-vitro tests, spore suspensions of the more effective endophytes were inoculated separately to healthy Ld 368 seedlings to evaluate their efficacy in controlling brown spot disease and to determine their effect on rice plant growth under greenhouse conditions. Two inoculation methods (i.e. seedling and soil inoculation) were used to identify the best approach to introduce the endophytic fungi into the plants. Plants inoculated with Trichoderma sp.1 and Chaetomium sp. using seedling inoculation method showed the lowest disease incidence as well as a significant difference (P ≤ 0.05) in shoot length and fresh and dry weight of plants. These results indicated that the tested endophytic fungal sp. have the ability to control brown spot disease incidence and enhance plant growth of rice variety Ld 368.

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Section: Tests For the Effect Of Endophytes On Brown Spot Disease Incidence Under Greenhouse Conditionsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Effect of fungal endophytes of rice variety Ld 368 on growth and brown spot disease incidence of rice

Priyadarshani¹,

Deshappriya²,

Sandamali³

2018

Trop. Plant Res.

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“…Therefore, there is a need to develop safe and environment friendly alternative strategies to protect and improve their yield. In the last few decades, endophytic fungi have been emerging as alternative sources for bioactive agents targeted towards plant protection and growth promotion (W ijesooriya and Deshappriya, 2016). They are reported to provide a number of benefits to the host plants in various ways, such as growth promotion, protection against diseases and pests and augmenting absorption of minerals (Hassan et al, 2013).…”

Section: Introductionmentioning

confidence: 99%

Seed Borne Endophytic Fungi Associated with Some Indigenous Rice Varieties of North East India and Their Growth Promotion and Antifungal Potential

Roy

Mili

Talukdar

et al. 2020

IJARe

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Background: Seed borne endophytic fungi play an important role in seed germination and plant health. There are ubiquitous and have been found associated in every plant species investigated so far. They colonize plant seeds without causing any disease and are often vertically transmitted. Despite their occurrence, seed borne endophytic fungi are poorly investigated and their role for application in agriculture is still to be elucidated. Methods: In the present study endophytic fungi associated with seeds of some indigenous rice varieties of North East, India was investigated. The isolates were determined for IAA activity in-vitro and antifungal activity against rice pathogen, Magnaporthe grisea. Crude metabolites obtained from potent isolates were characterized by GCMS analysis to reveal the presence of bioactive compounds. Result: Our result indicated that commonly isolated fungal genera were Aspergillus, Fusarium, Gliocladium, Mucor, Penicillium, Bipolaris, Basidiobolus and Mycelia sterilia. Amongst them, colonization frequency (CF %) of Fusarium (8.8%) was found to be highest and was isolated from seeds of almost all the varieties. It was observed that four isolates of Fusarium showed good IAA production in the medium amended with tryptophan. The isolates also displayed antifungal activity against Magnaporthe grisea. GCMS analysis of the metabolites indicated presence of several bioactive compounds. The study suggests that seed borne endophytes can be explored as bio-inoculants for crop improvement in future research program.

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“…Many endophytes were studied to ascertain their capacity for producing bioactive products comparable to those generated by their host crops [13]. In several plants [14], symbiosotic endophytic pathogens have been observed to enhance plant growth. Auxins (IAA) and gibberellins (GA3, GA4 and GA7) were recorded to be produced by various types of endophytic fungi [15].…”

Section: Introductionmentioning

confidence: 99%

IAA production and maize crop growth promoting potential of endophyte Aspergillus niger (AO11) under salt stress

ziaullah¹,

Asim²,

Nayab³

et al. 2020

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Maize is cultivated under a broad range of soil conditions and environments. Maize is slightly vulnerable to salt stress and therefore it is seriously affected by soil salinity all over the world. Recognizing the responses of maize to salt stress and making a good strategy to overcome this problem could aid to develop solutions in saline areas to improve maize productivity. We investigated in this research the impacts, tolerance and salt stress management in corn. Many endophytic fungi can produce the Indole-3-acetic acid (IAA) is known for their role in plant growth and development both with and without salt stress conditions. The current study was focused on the production of IAA by endophytic fungi (Aspergillus niger) and maize seeds germination and promotion of seedling growth and vigor. In order to evaluate the defense response of maize plant, in relation to A. niger, an experiment was designed with three replications of treatments (control, salt stressed, salt stressed inoculated with A. niger, and only A. niger inoculated plants. It was determined that A. niger has the ability to produce the IAA in NaCl and KCl stress peaking 53 μg/ml and was not significantly by alternating the nitrogen and carbon sources in the nutrient broth but increasing the tryptophan concentration raised its production level. High concentration stress of sodium chloride and potassium chloride decrease maize plant seeds germination percentage, shoot and root length also affected the fresh and dry weight of maize. A. niger improves salt resistance in maize and also increased the germination percentage up to 30%, also improved the chlorophyll level and it was proved an effective approach for improving maize germination and growth under salt stress.

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An inoculum of endophytic fungi for improved growth of a traditional ricevariety in Sri Lanka

Cited by 21 publications

References 21 publications

Effect of fungal endophytes of rice variety Ld 368 on growth and brown spot disease incidence of rice

Effect of fungal endophytes of rice variety Ld 368 on growth and brown spot disease incidence of rice

Seed Borne Endophytic Fungi Associated with Some Indigenous Rice Varieties of North East India and Their Growth Promotion and Antifungal Potential

IAA production and maize crop growth promoting potential of endophyte Aspergillus niger (AO11) under salt stress

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