Drought Stress and Mycorrhizal Plant

Pagano, Marcela C.

doi:10.1007/978-1-4614-9466-9_5

Cited by 26 publications

(9 citation statements)

References 59 publications

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“…This resulted from the better absorption of the surface area provided by extensive fungal hyphae (Wu and Zou, 2017;Zhang et al, 2018) and/or a direct uptake from compost to plant root (Kohler et al, 2015) and/or the mobilization and absorption of various nutrients from soil to plants by PGPR (Grobelak et al, 2015). AMF-colonization results in the establishment of extensive hyphal networks and glomalin secretion, fueling plants with water and nutrient, and thereby, enhancing soil structure (Pagano, 2014). Recently, Volpe et al (2016) reported the role of PT family genes as components of the Pi-sensing machinery in root tips, which is up-regulated in AMF colonized plants.…”

Section: Discussionmentioning

confidence: 99%

Biofertilizers as Strategies to Improve Photosynthetic Apparatus, Growth, and Drought Stress Tolerance in the Date Palm

et al. 2020

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Section: Discussionmentioning

confidence: 99%

Biofertilizers as Strategies to Improve Photosynthetic Apparatus, Growth, and Drought Stress Tolerance in the Date Palm

et al. 2020

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“…AMF associations can play a crucial role in the plants’ access to water (Khalvati et al . 2005 ), and plants can promote the association with the fungus via their carbon allocation (Simard and Austin 2010 ; Pagano 2014 ). The relative increase in AMF abundance (roof compared with control) was comparable for the two farming systems, yet, only the biodynamic farming system promoted AMF abundance in addition to the experimental drought.…”

Section: Discussionmentioning

confidence: 99%

Effects of simulated drought on biological soil quality, microbial diversity and yields under long-term conventional and organic agriculture

Kundel

Bodenhausen

Jørgensen

et al. 2020

FEMS Microbiology Ecology

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Drought and agricultural management influence soil microorganisms with unknown consequences for the functioning of agroecosystems. We simulated drought periods in organic (biodynamic) and conventional wheat fields and monitored effects on soil water content, microorganisms and crops. Above the wilting point, water content and microbial respiration were higher under biodynamic than conventional farming. Highest bacterial and fungal abundance were found in biodynamically managed soils, and distinct microbial communities characterised the farming systems. Most biological soil quality parameters and crop yields were only marginally affected by the experimental drought, except for arbuscular mycorrhizal fungi (AMF), which increased under the experimental drought in both farming systems. AMF were further strongly promoted by biodynamic farming resulting in almost three times higher AMF abundance under experimental drought in the biodynamic compared to the conventional farming system. Our data suggest an improved water storage capacity under biodynamic farming and confirms positive effects of biodynamic farming on biological soil quality. The interactive effects of the farming system and drought may further be investigated under more substantial droughts. Given the importance of AMF for the plant's water supply, more in-depth studies on AMF may help to clarify their role for yields under conditions predicted by future climate scenarios.

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“…In addition, public awareness and supervision of techniques involving things such as genetically modified organisms (GMOs) may be needed. Under such circumstances, plant-related microbes that can improve the drought tolerance of crops have attracted increased amounts of attention [ 33 , 49 , 77 , 78 , 79 ]. Scientists have isolated rhizospheric and endophytic bacteria and fungi from arid regions or from xerophytes, and these microbes have been shown to improve the growth of rice, sorghum, corn, cabbage, millet, and wheat under drought-stress conditions [ 14 , 80 , 81 , 82 , 83 , 84 ].…”

Section: Discussionmentioning

confidence: 99%

Microbial Diversity of Upland Rice Roots and Their Influence on Rice Growth and Drought Tolerance

Pang

Zhao

et al. 2020

Microorganisms

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Among abiotic stresses, drought is one of the most important factors limiting plant growth. To increase their drought tolerance and survival, most plants interact directly with a variety of microbes. Upland rice (Oryza sativa L.) is a rice ecotype that differs from irrigated ecotype rice; it is adapted to both drought-stress and aerobic conditions. However, its root microbial resources have not been explored. We isolated bacteria and fungi from roots of upland rice in Xishuangbanna, China. Four hundred sixty-two endophytic and rhizospheric isolates (337 bacteria and 125 fungi) were distributed. They were distributed among 43 genera on the basis of 16S rRNA and internal transcribed spacer (ITS) gene sequence analysis. Notably, these root microbes differed from irrigated rice root microbes in irrigated environments; for example, members of the Firmicutes phylum were enriched (by 28.54%) in the roots of the upland plants. The plant growth-promoting (PGP) potential of 217 isolates was investigated in vitro. The PGP ability of 17 endophytic and 10 rhizospheric isolates from upland rice roots was evaluated under well-irrigated and drought-stress conditions, and 9 fungal strains increased rice seedling shoot length, shoot and root fresh weight (FW), antioxidant capability, and proline (Pro) and soluble sugar contents. Our work suggests that fungi from upland rice roots can increase plant growth under irrigated and drought-stress conditions and can serve as effective microbial resources for sustainable agricultural production in arid regions.

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Drought Stress and Mycorrhizal Plant

Cited by 26 publications

References 59 publications

Biofertilizers as Strategies to Improve Photosynthetic Apparatus, Growth, and Drought Stress Tolerance in the Date Palm

Biofertilizers as Strategies to Improve Photosynthetic Apparatus, Growth, and Drought Stress Tolerance in the Date Palm

Effects of simulated drought on biological soil quality, microbial diversity and yields under long-term conventional and organic agriculture

Microbial Diversity of Upland Rice Roots and Their Influence on Rice Growth and Drought Tolerance

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