Arbuscular Mycorrhizal fungi (AMF) protects photosynthetic apparatus of wheat under drought stress

Mathur, Sonal; Tomar, Rupal Singh; Jajoo, Anjana

doi:10.1007/s11120-018-0538-4

Cited by 193 publications

(109 citation statements)

References 48 publications

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“…Beneficial effects of AMF on chlorophyll fluorescence also have been reported by de Andrade et al (2015), who found that mycorrhizal rice plants had higher chlorophyll fluorescence under arsenate and arsenite pollution than non-mycorrhizal plants. Mathur et al (2019), studying the response of wheat to very severe drought, also noted a beneficial effects of AMF on chlorophyll fluorescence. However, Porce et al (2015) observed that mycorrhizal plants exhibited lower chlorophyll fluorescence than non-mycorrhizal plants, except at high salt levels where fluorescence values increased in mycorrhizal plants compared to a treatment with lower salt levels.…”

Section: Stomatal Conductance and Chlorophyll Fluorescencementioning

confidence: 97%

Increased arbuscular mycorrhizal fungal colonization reduces yield loss of rice (Oryza sativa L.) under drought

et al. 2020

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Drought reduces the availability of soil water and the mobility of nutrients, thereby limiting the growth and productivity of rice. Under drought, arbuscular mycorrhizal fungi (AMF) increase P uptake and sustain rice growth. However, we lack knowledge of how the AMF symbiosis contributes to drought tolerance of rice. In the greenhouse, we investigated mechanisms of AMF symbiosis that confer drought tolerance, such as enhanced nutrient uptake, stomatal conductance, chlorophyll fluorescence, and hormonal balance (abscisic acid (ABA) and indole acetic acid (IAA)). Two greenhouse pot experiments comprised three factors in a full factorial design with two AMF treatments (low-and high-AMF colonization), two water treatments (well-watered and drought), and three rice varieties. Soil water potential was maintained at 0 kPa in the well-watered treatment. In the drought treatment, we reduced soil water potential to − 40 kPa in experiment 1 (Expt 1) and to − 80 kPa in experiment 2 (Expt 2). Drought reduced shoot and root dry biomass and grain yield of rice in both experiments. The reduction of grain yield was less with higher AMF colonization. Plants with higher AMF colonization showed higher leaf P concentrations than plants with lower colonization in Expt 1, but not in Expt 2. Plants with higher AMF colonization exhibited higher stomatal conductance and chlorophyll fluorescence than plants with lower colonization, especially under drought. Drought increased the levels of ABA and IAA, and AMF colonization also resulted in higher levels of IAA. The results suggest both nutrient-driven and plant hormone-driven pathways through which AMF confer drought tolerance to rice.

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Section: Stomatal Conductance and Chlorophyll Fluorescencementioning

confidence: 97%

Increased arbuscular mycorrhizal fungal colonization reduces yield loss of rice (Oryza sativa L.) under drought

et al. 2020

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“…Drought stress changes photosynthetic pigments and damages chloroplasts. Nonetheless, AM inoculation alleviates the damage of these parameters caused by the stress [77]. Rhizophagus irregularis-colonized castor bean plants subjected to water restriction increased contents of chlorophyll a (by 26%), b (30%), carotenoid (by 28.5%), and total chlorophyll (25.5%) in comparison to counterparts of non-AM plants [78].…”

Section: Increased Photosynthetic Efficiencymentioning

confidence: 98%

“…Numerous reports illustrate that AMF could increase photosynthetic activity or protect the photosynthetic apparatus under water stress conditions [77,78]. In fact, AM colonization considerably influences the stomatal behavior in the leaves of host plants, determining the water vapor efflux, CO 2 gas exchange, and thus photosynthetic activity [79].…”

Section: Increased Photosynthetic Efficiencymentioning

confidence: 99%

“…Mycorrhizal colonization has been found to alleviate the adverse impacts of drought stress on photochemical efficiency and photosystem II (PSII) reaction center [77,83]. Under water deficit, application of AMF promoted a higher maximum quantum efficiency of PSII (F v /F m ) [11], greater photosynthetic efficiency [84], transpiration rate, and net photosynthesis rate (P N ) [10,81].…”

Section: Increased Photosynthetic Efficiencymentioning

confidence: 99%

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Benefits of Arbuscular Mycorrhizal Fungi Application to Crop Production under Water Scarcity

Posta¹,

Duc²

2020

Drought - Detection and Solutions

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Water deficit is one of the most severe abiotic stresses threatening crop growth and production on the globe. Water stress causes a series of morphological, biochemical, physiological, and molecular alterations that negatively influence plant productivity. However, in nature, plants are often associated with microbes that can modulate plant responses to water scarcity. Among beneficial microbes, arbuscular mycorrhizal fungi (AMF) are one of the most widespread symbiotic fungi colonizing the majority of agricultural plants. Besides an enhancement in plant nutrition, AMF have been reported to improve plant performance under water restrictions. In this chapter, we emphasize the benefits of AMF inoculation to crop production under water deficit based on related laboratory and field experiments. Variable outcomes and challenges of AMF application are also discussed for practical use in crop production under water scarcity.

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“…Xu et al (2018) [17] showed that maize plants appeared to have high dependency on AMF which improved physiological mechanisms by raising growth, chlorophyll content, gas exchange and rubisco activity under salinity stress. Mathur et al (2018) [18] showed that AFM plants increased relative water content both of plants leaf and soil indicating that AMF hyphae penetrated deep into soil and provided moisture to the plants. Thus this work was conducting to study the drought tolerance of maize plant at two different harvesting stages (30-and 90-days) and the combined action with mycorrhiza inoculation at these plant growth stages.…”

Section: Introductionmentioning

confidence: 99%

Strategy Role of Mycorrhiza Inoculation on Osmotic Pressure, Chemical Constituents and Growth Yield of Maize Plant Gown under Drought Stress

El-Samad¹,

El-Hakeem²

2019

AJPS

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The present work was carried out to investigate the role of mycorrhiza inoculation at two harvesting stages (90-days and 30-days) of maize plants grown in pot experiment with different moisture content levels 100%, 70%, 50% and 20%. Drought stress tolerant in maize plant was varied in different organs of the same plants and also varied among different stage of plant development. The sensitivity of maize plants was related with reduction of root soluble sugar, shoot and root soluble protein at 30-days of plant harvesting, and soluble sugar and soluble protein in both organs of both harvesting stages. This related with reduction in OP and lowering of water uptake which induced a marked decrease in fresh and dry matter production in shoot and root of both harvesting stages. AM inoculation increase maize tolerant to drought stress presented in increasing growth parameters, chemical constituents and minerals contents compared with untreated plants. Proline content with AM inoculation was more or less unchanged in shoot of plant harvesting at 30-days and in root of plant harvesting at 90-days. However, a marked increase was induced in plant harvesting at 30-days and in shoot of plant harvesting at 90-days. Mycorrhiza inoculation induced a significant increase in OP value either compared with corresponding level or compared with control value 100% as in plant 30-days of harvesting or compared with control only as in plant harvesting after 90-days. AM infection with different moisture content levels measured by N-acetyl glucosamine content were not affected by drought stress. Results showed also that control roots contained N-acetyl glucosamine would be attributed to mycorrhiza and other fungi naturally present in soil.

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Arbuscular Mycorrhizal fungi (AMF) protects photosynthetic apparatus of wheat under drought stress

Cited by 193 publications

References 48 publications

Increased arbuscular mycorrhizal fungal colonization reduces yield loss of rice (Oryza sativa L.) under drought

Increased arbuscular mycorrhizal fungal colonization reduces yield loss of rice (Oryza sativa L.) under drought

Benefits of Arbuscular Mycorrhizal Fungi Application to Crop Production under Water Scarcity

Strategy Role of Mycorrhiza Inoculation on Osmotic Pressure, Chemical Constituents and Growth Yield of Maize Plant Gown under Drought Stress

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