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

Chareesri, Anupol; Deyn, Gerlinde B. De; Сергеева, Л. И.; Polthanee, Anan; Kuyper, Thomas W.

doi:10.1007/s00572-020-00953-z

Cited by 79 publications

(51 citation statements)

References 54 publications

(73 reference statements)

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“…Many studies have suggested better performance of AM fungi under moderate drought stress and ineffective roles under severe drought conditions [ 46 , 47 ]. A severe water deficit caused the reduction of the effectiveness of AM inoculation in wheat, which in turn resulted in prolonged water stress [ 29 ]; this supported our findings that AM inoculation benefited the growth, photosynthesis and antioxidant enzymatic activity of seedlings that had been subjected to a moderate water deficit, especially under 40%, 60% and 80% FC conditions, whereas AM inoculation was ineffective under the 20% FC condition.…”

Section: Discussionmentioning

confidence: 99%

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Effects of arbuscular mycorrhizal inoculation on the growth, photosynthesis and antioxidant enzymatic activity of Euonymus maackii Rupr. under gradient water deficit levels

Zhen

Meng

et al. 2021

PLoS ONE

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The role of arbuscular mycorrhizal (AM) fungus (Rhizophagus intraradices) in the amelioration of the water deficit-mediated negative influence on the growth, photosynthesis, and antioxidant system in Euonymus maackii Rupr. was examined. E. maackii seedlings were subjected to 5 water deficit levels, soil water contents of 20%, 40%, 60%, 80% and 100% field capacity (FC), and 2 inoculation treatments, with and without AM inoculation. The water deficit increasingly limited the seedling height, biomass accumulation in shoots and roots, chlorophyll content, gas exchange and chlorophyll fluorescence parameters with an increasing water deficit level. In addition, water deficit stimulated the activities of antioxidant enzymes, including superoxide dismutase (SOD), peroxidase (POD) and catalase (CAT), in both shoots and roots, except under 20% FC conditions. E. maackii seedlings under all water deficit conditions formed symbiosis well with AM fungi, which significantly ameliorated the drought-mediated negative effect, especially under 40% and 60% FC conditions. Under 40% to 80% FC conditions, AM formation improved seedling growth and photosynthesis by significantly enhancing the biomass accumulation, chlorophyll content and assimilation. Mycorrhizal seedlings showed better tolerance and less sensitivity to a water deficit, reflected in the lower SOD activities of shoots and roots and CAT activity of shoots under 40% and 60% FC conditions. Downregulation of the antioxidant system in mycorrhizal seedlings suggested better maintenance of redox homeostasis and protection of metabolism, including biomass accumulation and assimilation. All the results advocated the positive role of R. intraradices inoculation in E. maackii against a water deficit, especially under 40% FC, which suggested the distinct AM performance in drought tolerance and the potential role of the combination of E. maackii-AM fungi in ecological restoration in arid regions.

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Section: Discussionmentioning

confidence: 99%

“…Many studies have suggested better performance of AM fungi under moderate drought stress and ineffective roles under severe drought conditions [46,47]. A severe water deficit…”

mentioning

confidence: 99%

Effects of arbuscular mycorrhizal inoculation on the growth, photosynthesis and antioxidant enzymatic activity of Euonymus maackii Rupr. under gradient water deficit levels

Zhen

Meng

et al. 2021

PLoS ONE

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“…Recently, AMF mediated drought tolerance was observed in rice plants via increased concentrations of phosphate and IAA (Chareesri et al, 2020). AMF significantly influenced the proteome of drought-stressed plants as evidenced in different genotypes of wheat.…”

Section: Arbuscular Mycorrhizal Fungimentioning

confidence: 99%

“…AMF inoculated sweet potato plants showed better growth, high chlorophyll content, increased total soluble sugars, and maintenance of osmotic potential under water deficit conditions (Yooyongwech et al, 2016). Recently, AMF mediated drought tolerance was observed in rice plants via increased concentrations of phosphate and IAA (Chareesri et al, 2020). AMF significantly influenced the proteome of drought‐stressed plants as evidenced in different genotypes of wheat.…”

Section: Recruiting Microbes For Drought Tolerancementioning

confidence: 99%

Insights into the plant responses to drought and decoding the potential of root associated microbiome for inducing drought tolerance

Mathur

Roy

2021

Physiologia Plantarum

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Global increase in water scarcity is a serious problem for sustaining crop productivity.The lack of water causes the degeneration of the photosynthetic apparatus, an imbalance in key metabolic pathways, an increase in free radical generation as well as weakens the root architecture of plants. Drought is one of the major stresses that directly interferes with the osmotic status of plant cells. Abscisic acid (ABA) is known to be a key player in the modulation of drought responses in plants and involvement of both ABA-dependent and ABA-independent pathways have been observed during drought. Concomitantly, other phytohormones such as auxins, ethylene, gibberellins, cytokinins, jasmonic acid also confer drought tolerance and a crosstalk between different phytohormones and transcription factors at the molecular level exists. A number of drought-responsive genes and transcription factors have been utilized for producing transgenic plants for improved drought tolerance. Despite relentless efforts, biotechnological advances have failed to design completely stress tolerant plants until now. The root microbiome is the hidden treasure that possesses immense potential to revolutionize the strategies for inducing drought resistance in plants.Root microbiota consist of plant growth-promoting rhizobacteria, endophytes and mycorrhizas that form a consortium with the roots. Rhizospheric microbes are proliferous producers of phytohormones, mainly auxins, cytokinin, and ethylene as well as enzymes like the 1-aminocyclopropane-1-carboxylate deaminase (ACC deaminase) and metabolites like exopolysaccharides that help to induce systemic tolerance against drought. This review, therefore focuses on the major mechanisms of plantmicrobe interactions under drought-stressed conditions and emphasizes the importance of drought-tolerant microbes for sustaining and improving the productivity of crop plants under stress. | INTRODUCTIONPlants are dependent on water like any other living entity and even a small scarcity of water causes a negative impact on their growth and productivity. Drought is one of the major stresses faced by a large number of crop plants due to extreme water paucity and is one of the prime reasons for heavy losses in crop production all over the globe (Fahad et al., 2017). Drought stress seriously interferes with the activities of RUBISCO and other photosynthetic enzymes, along with the enhanced accumulation of reactive oxygen species (ROS) by deteriorating the antioxidant enzyme machinery (Reddy et al., 2004). It also hampers the seed set and yield by affecting the breeding traits like Piyush Mathur and Swarnendu Roy contributed equally to this study.

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“…Root interactions with soil symbiotic microbes such as arbuscular mycorrhizal fungi (AMF), which is inhibited by flooding, might also improve water and nutrient acquisition in the topsoil (Vallino, Fiorilli & Bonfante 2014;Mbodj et al 2018). Furthermore, AMF were shown to confer drought tolerance in rice (Chareesri, De Deyn, Sergeeva, Polthanee & Kuyper 2020). Interestingly, AMF colonization was also shown to reduce P loss from paddy fields thus improving PUE and reducing environmental impacts (Zhang et al 2020).…”

Section: Introductionmentioning

confidence: 99%

Root traits for low input agroecosystems in Africa

Ms¹,

Burridge²,

R³

et al. 2021

Preprint

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In Africa, agriculture is largely based on low-input and small-holder farming systems that use little inorganic fertilizers and have limited access to irrigation and mechanization in comparison to modern agricultural systems. Improving agricultural practices and developing new cultivars adapted to these low-input environments, where production already suffers from climate change, is a major priority for ensuring food security in the future. Root phenes improving water and nutrient uptake could represent a solution toward achieving these goals. In this review, we illustrate how breeding for specific root phenes could improve crop adaptation and resilience in Africa using three case studies covering very contrasted low-input agro-ecosystems. We conclude with a discussion on how these phenes could be validated and made available to breeders and agronomists.

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

Cited by 79 publications

References 54 publications

Effects of arbuscular mycorrhizal inoculation on the growth, photosynthesis and antioxidant enzymatic activity of Euonymus maackii Rupr. under gradient water deficit levels

Effects of arbuscular mycorrhizal inoculation on the growth, photosynthesis and antioxidant enzymatic activity of Euonymus maackii Rupr. under gradient water deficit levels

Insights into the plant responses to drought and decoding the potential of root associated microbiome for inducing drought tolerance

Root traits for low input agroecosystems in Africa

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