Role of Quorum Sensing in Nutrient Acquisition and Synergistic Plant-Microbe Association

Meryem, Syeda Shaima; Pervez, Arshid; Ebadi, Abdol Ghaffar

doi:10.1007/978-3-030-91499-8_14

Cited by 1 publication

(1 citation statement)

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“…In addition, the root growth process is accompanied by complex root–microbe interactions, which determine the efficiency of soil water and nutrient acquisition by the root system (Meryem et al, 2022). The moderate and high dissolved oxygen concentration treatments led to root length differences and significant effects on the diversity of the bacterial community (Table 2), which could result in distinct root–microbe interactions, affect the efficiency of soil water and nutrient acquisition by the roots and indirectly result in differences in the soil EC (M. Li et al, 2020).…”

Section: Discussionmentioning

confidence: 99%

Response of the tomato rhizosphere bacterial community to water–oxygen coupling under micronanobubble oxygenated drip irrigation in mildly saline soil

Wang,

Guo,

Zhang

et al. 2023

Land Degrad Dev

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The deterioration of the soil water–air environment due to salinization can reduce soil bacterial activity and cause crop yield reduction. Micronanobubble oxygenated drip irrigation can significantly improve the nonsaline soil water–air environment and enhance bacterial activity, but its effect on salinized soil bacteria is unknown. In this study, we used a tomato cultivation experiment in mildly saline soil to evaluate the responses of the rhizosphere bacterial community to the soil microenvironment created by micronanobubble oxygenated drip irrigation. The results indicated that the soil environmental factors (including soil electrical conductivity, i.e., EC) (r = 0.46) and root length (r = −0.86) had important regulatory effects on bacterial community function, which had significant direct effects on tomato yield (r = 0.46). The moderate dissolved oxygen concentration treatment significantly reduced the EC by 63.22%–73.32% compared with CK (noncultivated soil treatment) and generally increased the root length; however, only the combination of a moderate dissolved oxygen concentration and excess irrigation (A15W1.2) significantly increased tomato yields by 190.90% compared with A0W0.8 (the combination of a low dissolved oxygen concentration and insufficient irrigation) because the irrigation water volume was the limiting condition affecting the benefits of the root length increase. The high dissolved oxygen concentration treatment significantly reduced the EC by 60.36%–92.31% and increased the bacterial community diversity by 4.08%–6.16% compared with CK; these aforementioned changes favored the increase in tomato yield. However, similar to the result of the moderate dissolved oxygen treatments, the tomato yields were significantly higher and among the highest of all treatments only when a high dissolved oxygen concentration was combined with sufficient irrigation or excess irrigation (A30W1 or A30W1.2) due to the limiting effect of the irrigation water volume. Therefore, accounting for the changes in EC, soil bacterial community, and tomato yields, A15W1.2, A30W1, and A30W1.2 are recommended for tomato production in mildly saline soils.

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Section: Discussionmentioning

confidence: 99%