Diversity, plant growth promoting and downy mildew disease suppression potential of cultivable endophytic fungal communities associated with pearl millet

Nandhini, M.; Rajini, Sollepura B; Udayashankar, A. C.; Niranjana, S. R.; Lund, Ole; Shetty, H. Shekar; Prakash, H. S.

doi:10.1016/j.biocontrol.2018.08.019

Cited by 23 publications

(12 citation statements)

References 47 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The good rhizosphere competence of Pc in banana can be explained by the fact that Pc seems to prefer monocot to dicot plants [50]. The presence of Pc in roots or in the rhizosphere can exclude other fungal root colonizers by competence or biosynthesis of antimicrobial compounds [30,54]. Other studies found that by manipulating the banana rhizosphere microbiome it is possible to control the devastating fungus F. oxysporum f.sp.…”

Section: Discussionmentioning

confidence: 99%

Isolates of the Nematophagous Fungus Pochonia chlamydosporia Are Endophytic in Banana Roots and Promote Plant Growth

2020

View full text Add to dashboard Cite

The biocontrol fungus Pochonia chlamydosporia colonizes banana roots endophytically. Root hairs and root surface were colonized by a stable GFP (green fluorescent protein) transformant of the fungus. Hyphal penetration in root cells was also observed. Spores of P. chlamydosporia 123, significantly increase root and leaf length and weight in banana plantlets (Musa acuminata cv. ‘Dwarf Cavendish’) in growth chamber experiments 30 days post-inoculation. In greenhouse 8-L pot experiments, P. chlamydosporia 123 spore inoculation significantly increases root, corm and leaf length, and leaf weight in banana plants (75 days post-inoculation). Spore inoculation of P. chlamydosporia strains from diverse origin (Pc21, Pc123, Pc399, and Pccat), significantly increase root, corm and leaf length and weight in banana plantlets. Pc21 from Italy was the best colonizer of banana roots. Consequently, this strain significantly increases banana root and leaf length most. Root colonization by P. chlamydosporia was also detected using cultural techniques and qPCR.

show abstract

Section: Discussionmentioning

confidence: 99%

Isolates of the Nematophagous Fungus Pochonia chlamydosporia Are Endophytic in Banana Roots and Promote Plant Growth

2020

View full text Add to dashboard Cite

show abstract

“…(Kurosawa et al, 2018). Although, various species of Bipolaris are reported to have growth promoting agent in plants (Nandhini et al, 2018) but there are some other species which are pathogenic in telomorphic stage, such as Bipolaris hawaiiensis , Bipolaris spicifera , and Bipolaris australiensis (Nur Ain Izzati et al, 2019). Bipolaris sorokiniana is one of the dubious species of Bipolaris which acted as hemibiotroph and cause HR in variety of plant species (McDonald et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

Phytohormonal cross-talk modulate Bipolaris sorokiniana (Scc.)interaction with Zea mays

Yousaf

Hussain

Hamayun

et al. 2019

Preprint

View full text Add to dashboard Cite

16Besides acting as growth inducing molecule, Gibberellin (GA 3 ) also confers the compatibility 17 of microbial interactions with host. We inoculated 11 days old Z. mays seedlings grown under 18 hydroponic conditions and high GA 3 levels with Bipolaris sorokiniana (BIPOL) at the spore 19 density (SD) of OD 0.6 . The high level of GA 3 negatively affected the growth of the seedlings, 20 accompanied by the high level of stress deducing secondary metabolites (proline, total 21 flavanoids, phenylpropanoids, and glucosinolides). Moreover, high level of GA 3 produced a 22 hypersensitive response (HR) in the seedlings. The HR developed cross talks with IAA and 23 trans-zeatins and triggered higher production of hypersensitive inducing biomolecules. The 24 other HR co-related biological processes were demonstrated by high phytoalexins level and 25 high protease activities. Such activities ultimately inhibited the colonization of BIPOL on the 26 roots of maize seedlings. The products of the genes expressed at high GA 3 also conferred the 27 deterrence of BIPOL colonization at SD = OD 0.6 . Intriguingly, when we inhibited GA 3 28 biosynthesis in the seedlings with aerially sprayed uniconizole, prior to BIPOL treatment, the 29 BIPOL colonized and subsequently promoted the seedling growth. This low level of GA 3 30 after BIPOL treatment checked the high level of secondary metabolites and hypersensitivity 31 inducing molecules. The results, thus suggested that the aforementioned processes only 32 happened in the BIPOL at SD (OD 0.6 ), whereas the SD at lower levels (OD 0.2 or OD 0.4 ) 33 neither promoted the growth of uniconizole pre-treated seedlings nor produced HR in control 34 seedlings of maize plant.35

show abstract

“…Endophytic microorganisms can be used either directly to boost agricultural productivity through enhancing plant growth, increasing seed production, modulating the environmental effects caused by biotic and abiotic stress, or triggering biological control for diseases (Rai et al, 2014;Nandhini et al, 2018;Strobel, 2018). Their growth-promoting agent abilities make them extremely useful in agriculture (Strobel, 2018).…”

Section: Introductionmentioning

confidence: 99%

“…From the perspective of the plant, these microorganisms fix nitrogen, solubilise phosphate, synthesise phytohormones (such as indole acetic acid -IAA). On the other hand, plants provide shelter and nutrients to the endophytes (Ikram et al, 2018;Nandhini et al, 2018;Adhikari & Pandey, 2019). Endophytic fungi, which perform different symbiotic and ecological functions, may contribute to the adaptation of plants to their environments (Santoyo, Moreno-Hagelsieb, & Orozco-Mosqueda, 2016;Adhikari & Pandey, 2019).…”

Section: Introductionmentioning

confidence: 99%

“…In agriculture, microorganisms capable of producing IAA and solubilizing phosphorous, thereby increasing the development of their host, have proven themselves useful in the approaches to friendly agriculture (Murphy, Doohan, & Hodkinson, 2018;Nandhini et al, 2018). Besides, several of these endophytes can antagonize pathogens and control different diseases (Santoyo et al, 2016;Murphy et al, 2018;Strobel, 2018).…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Ornamental plant Pachystachys lutea as a source of promising endophytes for plant growth and phytoprotective activity

Ribeiro

Polli

Oliveira

et al. 2021

Acta Sci. Biol. Sci.

View full text Add to dashboard Cite

Endophytes are growth-promoting agents capable of synthesizing phytohormones, uptaking nutrients, and controlling pathogens. There is a strong potential to exploit them in the agriculture field like biofertilizers and biocontrol agents. In this work, we aimed to evaluate endophytic fungi isolated from Pachystachys lutea for their potential to solubilize phosphate, synthesise indole acetic acid (IAA), antagonize phytopathogens, and promote plant growth under greenhouse conditions. The phosphate solubilization efficiency was assessed on Pikovskaya’s agar medium. For analysis of IAA production, mycelia plugs of endophytes were cultured in Potato Dextrose Broth medium supplemented with L-tryptophan, with Salkowski Reagent, and the absorbance of the culture was measured. The antagonism evaluation of strain Alternaria sp. PL75 against phytopathogens was performed using the paired-culture technique. The promotion of plant growth provided by Alternaria sp. PL75 was evaluated in tomato plants. All strains evaluated were able to solubilize phosphate; however, the strain Alternaria sp. PL75 was the most effective (4.29). Two strains, Nemania sp. PL27 and Alternaria sp. PL75, produced 1.86 and 1.73 μg mL-1 of IAA, respectively. In the antagonism assay, the endophyte Alternaria sp. PL75 and its fungal extract showed the best results against the pathogen Moniliophthora perniciosa. The greenhouse experiment result showed the endophyte Alternaria sp. PL75 increased the plantlets emergency speed index and the percentage of germination from 60 to 81.63%. It was also observed a statistical significance in the shoot length of the treated plants with the endophyte suspension (55.38 cm) compared to the control (41.67 cm).

show abstract

Diversity, plant growth promoting and downy mildew disease suppression potential of cultivable endophytic fungal communities associated with pearl millet

Cited by 23 publications

References 47 publications

Isolates of the Nematophagous Fungus Pochonia chlamydosporia Are Endophytic in Banana Roots and Promote Plant Growth

Isolates of the Nematophagous Fungus Pochonia chlamydosporia Are Endophytic in Banana Roots and Promote Plant Growth

Phytohormonal cross-talk modulate Bipolaris sorokiniana (Scc.)interaction with Zea mays

Ornamental plant Pachystachys lutea as a source of promising endophytes for plant growth and phytoprotective activity

Contact Info

Product

Resources

About