Role of Jasmonate in Modulation of Mycorrhizae-Induced Resistance Against Fungal Pathogens

Nair, Aswathy; Thulasiram, Hirekodathakallu V.; Bhargava, S.

doi:10.1007/978-1-0716-0142-6_8

Cited by 2 publications

(1 citation statement)

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“…Most microorganisms in the rhizosphere use plant exudates and dead roots as C substrate thereby competing with the plants for essential nutrients, such as inorganic N and P, while other mineralize soil organic matter releasing plant nutrients. Some microorganisms, such as mycorrhizal fungi, however, help plants to obtain nutrients and stimulate resistance against pathogens 4 . A wide range of bacterial groups generally known as plant growth promoting bacteria (PGPB) facilitate plant nutrient uptake, such as nitrogen, phosphorus and iron.…”

Section: Introductionmentioning

confidence: 99%

The root endophytic bacterial community of Ricinus communis L. resembles the seeds community more than the rhizosphere bacteria independent of soil water content

Hereira-Pacheco

Navarro‐Noya

Dendooven

2021

Sci Rep

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Rhizosphere and root endophytic bacteria are crucial for plant development, but the question remains if their composition is similar and how environmental conditions, such as water content, affect their resemblance. Ricinus communis L., a highly drought resistant plant, was used to study how varying soil water content affected the bacterial community in uncultivated, non-rhizosphere and rhizosphere soil, and in its roots. Additionally, the bacterial community structure was determined in the seeds of R. communis at the onset of the experiment. Plants were cultivated in soil at three different watering regimes, i.e. 50% water holding capacity (WHC) or adjusted to 50% WHC every two weeks or every month. Reducing the soil water content strongly reduced plant and root dry biomass and plant development, but had little effect on the bacterial community structure. The bacterial community structure was affected significantly by cultivation of R. communis and showed large variations over time. After 6 months, the root endophytic bacterial community resembled that in the seeds more than in the rhizosphere. It was found that water content had only a limited effect on the bacterial community structure and the different bacterial groups, but R. communis affected the bacterial community profoundly.

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Section: Introductionmentioning

confidence: 99%