Differential effects of rhizobacteria from uninfected and infected tomato on <i>Meloidogyne incognita</i> under protected cultivation

Gowda, Manjunatha T.; Prasanna, Radha; Kundu, Aditi; Rana, Virendra Singh; Rao, Uma; Chawla, Gautam

doi:10.1002/jobm.202200695

Cited by 2 publications

(1 citation statement)

References 33 publications

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“…This concept of SMT has recently been investigated in plant health, where the focus is on transferring a healthy plant microbiome to plants experiencing dysbiosis (Bziuk et al 2022). The process of microbiome transplantation involves the extraction of a healthy donor microbiome and application into a recipient soil, and the addition of the microbiome can then cause disease-suppressive effects (Gowda et al 2023). Understanding the dynamics of plant health/disease processes concerning rhizosphere dysbiosis is essential for efficiently and sustainably managing plant diseases.…”

Section: Introductionmentioning

confidence: 99%

The Underground World of Plant Disease: How Does Rhizosphere Dysbiosis Affect Plant Health Above-ground?

Ketehouli,

Pasche,

Buttrós

et al. 2024

Preprint

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Similar to the human gut microbiome, diverse microbes colonize the plant rhizosphere, and an imbalance of this microbial community, known as dysbiosis, may negatively impact plant health. This study aimed to investigate the influence of rhizosphere dysbiosis on above-ground plant health using tomato plants (Solanum lycopersicumL.) and the foliar bacterial spot pathogenXanthomonas perforansas model organisms. Four-week-old tomato plant’s rhizospheres were treated with streptomycin (0.6 g × L-1), or water (negative control) and spray-inoculated withX. perforans(105cells × mL-1) after 24 h. Half of the plants treated with streptomycin andX. perforansreceived soil microbiome transplants (SMT) from uninfected plant donors 48 h after streptomycin application. Streptomycin-treated plants showed a 26% increase in disease severity compared to plants that received no antibiotic, while plants that received the SMT had an intermediate level of disease severity. Antibiotic-treated plants showed a reduced abundance of rhizobacterial taxa like Cyanobacteria from the genusCylindrospermumas well as down-regulation of genes related to plant primary and secondary metabolism and up-regulation of plant defense genes associated with induced systemic resistance (ISR). This study highlights the crucial role of beneficial rhizosphere microbes in disease resistance, even to foliar pathogens.

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Section: Introductionmentioning

confidence: 99%

The Underground World of Plant Disease: How Does Rhizosphere Dysbiosis Affect Plant Health Above-ground?

Ketehouli,

Pasche,

Buttrós

et al. 2024

Preprint

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Endophytic actinomycetes promote growth and fruits quality of tomato (Solanum lycopersicum): an approach for sustainable tomato production

Khomampai,

Jeeatid,

Kaeomuangmoon

et al. 2024

PeerJ

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Background Tomato, a fruit with a high vitamin content, is popular for consumption and economically important in Thailand. However, in the past year, the extensive usage of chemicals has significantly decreased tomato yields. Plant Growth-Promoting Rhizobacteria (PGPR) is an alternative that can help improve tomato production system growth and yield quality while using fewer chemicals. The present study aimed to determine whether endophytic actinomycetes promote growth and fruit quality of tomato (Solanum lycopersicum). Methods The experiment was conducted in a net-houses at the Center for Agricultural Resource System Research, Faculty of Agriculture, Chiang Mai University, Chiang Mai province, Thailand. The randomized completely block design (RCBD) was carried out for four treatments with three replications, which was control, inoculation with TGsR-03-04, TGsL-02-05 and TGsR-03-04 with TGsL-02-05 in tomato plant. Isolated Actinomycetes spp. of each treatment was then inoculated into the root zone of tomato seedlings and analyzed by Scanning Electron Microscopy (SEM). The height of tomato plants was measured at 14, 28, 56, and 112 days after transplanting. Final yield and yield quality of tomato was assessed at the maturity phase. Results The SEM result illustrated that the roots of tomato seedlings from all treatments were colonized by endophytic actinomycetes species. This contributed to a significant increase in plant height at 14 days after transplanting (DAT), as found in the TGsR-03-04 treatment (19.40 cm) compared to the control. Besides, all inoculated treatments enhanced tomato yield and yield quality. The highest weight per fruit (47.38 g), fruit length (52.37 mm), vitamin C content (23.30 mg 100 g−1), and lycopene content (145.92 µg g−1) were obtained by inoculation with TGsR-03-04. Moreover, the highest yield (1.47 kg plant−1) was obtained by inoculation with TGsL-02-05. There was no statistically significant difference in the number of fruits per plant, fruit width, brix, and antioxidant activity when various inoculations of endophytic actinomycetes were applied. Therefore, the use of endophytic actinomycetes in tomato cultivation may be an alternative to increase tomato yield and yield quality.

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Differential effects of rhizobacteria from uninfected and infected tomato on Meloidogyne incognita under protected cultivation

Cited by 2 publications

References 33 publications

The Underground World of Plant Disease: How Does Rhizosphere Dysbiosis Affect Plant Health Above-ground?

The Underground World of Plant Disease: How Does Rhizosphere Dysbiosis Affect Plant Health Above-ground?

Endophytic actinomycetes promote growth and fruits quality of tomato (Solanum lycopersicum): an approach for sustainable tomato production

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