Arbuscular mycorrhizal fungi and biochar improves drought tolerance in chickpea

Hashem, Abeer; Kumar, Ashwani; Al-Dbass, Abeer; Al-Arjani, Al-Bandari Fahad; Singh, Garima; Farooq, Muhammad

doi:10.1016/j.sjbs.2018.11.005

Cited by 183 publications

(124 citation statements)

References 55 publications

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“…Similar relationships have been described for numerous other plant–mycorrhizal associations (e.g. rose (Abdel‐Salam et al , ), sorghum (Sun et al , ), chickpea H(ashem et al , ), and many tree species (summarized in Brunner et al ()). Plant exudates can also select for specific bacteria that enhance drought protection.…”

Section: Root Exudates As Stress Mediatorssupporting

confidence: 71%

Plant root exudation under drought: implications for ecosystem functioning

2019

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Summary Root exudates are a pathway for plant–microbial communication and play a key role in ecosystem response to environmental change. Here, we collate recent evidence that shows that plants of different growth strategies differ in their root exudation, that root exudates can select for beneficial soil microbial communities, and that drought affects the quantity and quality of root exudation. We use this evidence to argue for a central involvement of root exudates in plant and microbial response to drought and propose a framework for understanding how root exudates influence ecosystem form and function during and after drought. Specifically, we propose that fast‐growing plants modify their root exudates to recruit beneficial microbes that facilitate their regrowth after drought, with cascading impacts on their abundance and ecosystem functioning. We identify outstanding questions and methodological challenges that need to be addressed to advance and solidify our comprehension of the importance of root exudates in ecosystem response to drought.

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Section: Root Exudates As Stress Mediatorssupporting

confidence: 71%

Plant root exudation under drought: implications for ecosystem functioning

2019

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“…In the current study, mycorrhizal inoculated seedlings displayed higher Pn, Gs, and Tr, but lower Ci concentrations under both WW and drought stress conditions than their non-mycorrhizal treated counterparts, which was similar in woody species, such as black locust [8], P. trifoliata [66], carob (Ceratonia siliqua L.) [65], and M. hupehensis [3]. Studies have also shown that by increasing leaf area and P content, to regulate the physiological status, AMF optimizes the photosynthetic rate in the host plants [12]. Our results of a higher leaf area and P content in the inoculated seedlings also confirmed this.…”

Section: Discussionmentioning

confidence: 72%

Effects of Arbuscular Mycorrhizal Fungi on Growth and Physiological Performance of Catalpa bungei C.A.Mey. under Drought Stress

Chen

Meng

Feng

et al. 2020

Forests

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Catalpa bungei C.A.Mey. is a common ornamental timber species. Its survival and growth are greatly affected by water scarcity in arid and semi-arid areas of Northwest China. Evidence suggests arbuscular mycorrhizal fungus (AMF) may improve plant drought resistance. However, there is limited information on the systematic effects of AMF on drought resistance in C. bungei seedlings. Here, a pot experiment was used to explore the effects of inoculation with the AMF Rhizophagus intraradices on the growth and physiological performance of C. bungei under different water treatment conditions. Three water levels and two mycorrhizal inoculation treatments were used with factorial design. The results showed that drought stress noticeably affected the growth and physiological performance of C. bungei seedlings. However, inoculation with R. intraradices significantly ameliorated the growth, and alleviated the effects of drought stress. The growth parameters of AMF-inoculated seedlings significantly increased regardless of water status. AMF changed the biomass allocation in seedlings by reducing the root mass ratio (RMR) and root/shoot ratio. AMF-inoculated seedlings displayed higher gas exchange parameters, photosynthetic pigment concentrations, specific leaf area (SLA), but lower specific leaf weight (SLW), regardless of water status. AMF alleviated drought-induced oxidative stress by attenuating the excess generation of reactive oxygen species (ROS), especially H2O2 and O2−, in leaves. Inoculation with AMF under drought stress also dramatically augmented indole-3-acetic acid (IAA) and gibberellins (GA3) levels and the IAA/abscisic acid (ABA) and GA3/ABA ratios, but reduced ABA and zeatin (ZT) levels in leaves. AMF symbiosis improved root morphology and promoted the absorption of nitrogen (N) and phosphorus (P) in seedlings. We conclude that inoculation with R. intraradices is potentially useful for afforestation and cultivation of C. bungei in Northwest China. Furthermore, AMF improved soil structure by increasing the glomalin-related soil protein (GRSP) contents and the proportion of macro-aggregates (0.25–0.5 mm) in the rhizosphere soil.

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“…One promising management approach is to convert rice straw [1] or rice husk [4] into biochar, which can be suitable source of silicon. Biochar is used as a conditioner to improve soil quality and yield in agricultural systems [3,5,6], enhance soil carbon sequestration potential [1,7,8], enhance nutrient cycles in agricultural lands [3,[9][10][11] and alleviate the harmful effects of drought stress for chickpea, Cicer arietinum L. [12] and soybean Glycine max L. [13]. It also promotes plant growth through improving nutrients uptake and assimilation, improving soil microbial activity [5] and phytohormone synthesis [14].…”

Section: Introductionmentioning

confidence: 99%

Integrative Effects of Rice-Straw Biochar and Silicon on Oil and Seed Quality, Yield and Physiological Traits of Helianthus annuus L. Grown under Water Deficit Stress

et al. 2019

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Water deficit stress can negatively affect oil quality, crop yields and soil infertility. Thus, we investigated the effects of rice-straw biochar, foliar silicon and their combination on quality, yield and physiological traits of sunflower grown under three water deficit stress treatments. Water stress treatments were 50% (WS0; no stress), 70% (WS1; moderate stress) and 90% (WS2; severe stress) depletion of the available soil moisture. The results showed that WS1 and WS2 negatively affected oil quality, mycorrhizal spores, yield and physiological traits of the sunflower; however, biochar, silicon and their combination significantly (p ≤ 0.05) improved most of those traits. Oil and oleic acid contents of sunflower grown under WS2 were decreased by 18% and 25.8% compared to those grown under WS0, respectively. Nevertheless, the biochar and silicon combination resulted in higher oil (10.2%) and oleic acid (12.2%) in plants grown under WS2 than those grown in untreated plots. Also, a significant increase (182% and 277%) in mycorrhizal spores was obtained in soil treated combination of biochar and silicon under WS1 and WS2 in comparison to untreated soil, respectively. On the other hand, plants grown under WS1 and WS2 exhibited reduced seed yield ha−1 by 16.5% and 53.5% compared to those grown under WS0, respectively. However, seed yield ha−1 were increased by 26.8% and 27.1% in plots treated with combined treatment compared to untreated plants, respectively. In addition, the biochar and silicon combination significantly increased stomatal conductance by 21.4% and 12.1%, reduced proline by 56.6% and 51.2% and reduced catalase activity by 13.4% and 17.3% under WS1 and WS2 compared to those grown in untreated plots, respectively. Therefore, the combined treatment of biochar and silicon can minimize and alleviate the negative effects of WS1 and WS2, improve oil quality, physiological traits, microbial activity and seed yield ha−1in sunflower plants.

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Arbuscular mycorrhizal fungi and biochar improves drought tolerance in chickpea

Cited by 183 publications

References 55 publications

Plant root exudation under drought: implications for ecosystem functioning

Plant root exudation under drought: implications for ecosystem functioning

Effects of Arbuscular Mycorrhizal Fungi on Growth and Physiological Performance of Catalpa bungei C.A.Mey. under Drought Stress

Integrative Effects of Rice-Straw Biochar and Silicon on Oil and Seed Quality, Yield and Physiological Traits of Helianthus annuus L. Grown under Water Deficit Stress

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