Biochemical response and interactions between arbuscular mycorrhizal fungi and plant growth promoting rhizobacteria during establishment and stimulating growth of Arizona cypress (Cupressus arizonica G.) under drought stress

Aalipour, Hamed; Nikbakht, Ali; Etemadi, Nematollah; Rejali, Farhad; Soleimani, Mohsen

doi:10.1016/j.scienta.2019.108923

Cited by 76 publications

(42 citation statements)

References 39 publications

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“…However, colonization by AMF had positive effects on the growth parameters of C. bungei seedlings under both WW and drought stress. Similar effects were previously reported in other species; Sophora davidii [53], black locust [8], Cyclobalanopsis glauca [45] and Arizona cypress (Cupressus arizonica G.) [16]. We recorded significant positive correlations (p < 0.01) between AMF colonization and morphological parameters, which corroborate the above effects.…”

Section: Discussionsupporting

confidence: 90%

“…AMF promotes the absorption of water and nutrients by plant roots and facilitates water and nutrient transport from the roots to the leaves, leading to enhanced photosynthetic rate and other gas exchange-related traits. Moreover, it improves plant nutrition by increasing the availability and affecting the distribution of nutrients, and promotes the growth of woody tree seedlings (height and basal diameter), biomass accumulation, and stress resistance [8,13,16,43].…”

Section: Discussionmentioning

confidence: 99%

“…Avoidance of oxidative stress by preventing ROS accumulation is the most effective way for mycorrhizal inoculated plants to cope with drought stress [80]. [46], C. arizonica [16] and M. hupehensis [3], indicating that mycorrhizal fungi could mitigate drought-induced oxidative stress in plants by reducing the production of ROS, and thus can maintain the integrity of cell membranes and stabilize proteins under drought stress [15,80]. Low ROS accumulation in the mycorrhizal inoculated seedlings may be related to an intensive hyphal and arbuscular growth within the roots [46].…”

Section: Discussionmentioning

confidence: 99%

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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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Section: Discussionsupporting

confidence: 90%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

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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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“…to mitigate the effect of water drought, and plants exhibited good phenotypic characteristics such as an increase in chlorophyll biosynthesis and rubisco activity and a better plant yield (Table 1). The consortium of Bacillus megaterium, B. licheniformis and fulvic acid on wheat, tripartite influence of AMF-Rhizophagus irregularis, Funneliformis mosseae and Pseudomonas fluorescens on Arizona plant (Aalipour et al 2020), integration of strains of Ensifer adhaerens (S1B1-5) and Pseudomonas resinovorans (S4R2-6) on tomato (Cherni et al 2019), and coalescence of Bacillus sp., Proteus sp., Aneurinibacillus aneurinilyticus and Alcaligenes spp. (Patel et al 2017) unbind trapped soil nutrients, making them readily available for plants and improvement of soil health (Table 1).…”

Section: Effect Of Xerophilic Organisms On Plant's Soilmentioning

confidence: 99%

The importance of adverse soil microbiomes in the light of omics: Implications for food safety

Akinola¹,

Babalola²

2020

Plant Soil Environ.

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One of the most serious threats facing agricultural productivity in the world is unfavourable soil conditions. Several studies have shown that almost half of the world’s land-mass is affected by either natural or human-induced pollution. This, therefore, poses a threat to agricultural improvement needed to tackle the problem of a continuous increase in the world population. The emergence of soil extremophiles with plant growth-promoting trait has proven to be a reliable means to quell the threat posed by some factors limiting soil potency. Adopting these organisms as bio-inoculants will easily proffer a solution to both biotic and abiotic soil stress. As such, the natural bio-fertilisers will help to improve the quality of the soil by making it healthy enough to sustain sufficient plant growth. This review gives an overview of the multifarious importance of extremophiles on plants grown under harsh soil conditions, with the multifaceted application of omics as a means to unveil these organisms and their benefits for environmentally sustainable agricultural systems and food safety.

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“…Thus, for maintaining global food security, it is very important to focus on research to mitigate drought Plants 2020, 9, 1629 2 of 21 severity. Among the abiotic factors, drought is generally thought to be a leading factor for decline in growth of crops [2]. The world population is increasing day by day and is likely to further increase more than 9 billion by 2050, and food availability is imperative, thus the need to focus on minimizing the limiting factors of crop productivity in limited arable land resources [3][4][5].…”

Section: Introductionmentioning

confidence: 99%

Desert Soil Microbes as a Mineral Nutrient Acquisition Tool for Chickpea (Cicer arietinum L.) Productivity at Different Moisture Regimes

Aulakh

Qādir

Hassan

et al. 2020

Plants

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Drought is a major constraint in drylands for crop production. Plant associated microbes can help plants in acquisition of soil nutrients to enhance productivity in stressful conditions. The current study was designed to illuminate the effectiveness of desert rhizobacterial strains on growth and net-return of chickpeas grown in pots by using sandy loam soil of Thal Pakistan desert. A total of 125 rhizobacterial strains were isolated, out of which 72 strains were inoculated with chickpeas in the growth chamber for 75 days to screen most efficient isolates. Amongst all, six bacterial strains (two rhizobia and four plant growth promoting rhizobacterial strains) significantly enhanced nodulation and shoot-root length as compared to other treatments. These promising strains were morphologically and biochemically characterized and identified through 16sRNA sequencing. Then, eight consortia of the identified isolates were formulated to evaluate the growth and development of chickpea at three moisture levels (55%, 75% and 95% of field capacity) in a glass house experiment. The trend for best performing consortia in terms of growth and development of chickpea remained T2 at moisture level 1 > T7 at moisture level 2 > T4 at moisture level 3. The present study indicates the vital role of co-inoculated bacterial strains in growth enhancement of chickpea under low moisture availability. It is concluded from the results that the consortium T2 (Mesorhizobium ciceri RZ-11 + Bacillus subtilis RP-01 + Bacillus mojavensis RS-14) can perform best in drought conditions (55% field capacity) and T4 (Mesorhizobium ciceri RZ-11 + Enterobacter Cloacae RP-08 + Providencia vermicola RS-15) can be adopted in irrigated areas (95% field capacity) for maximum productivity of chickpea.

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Biochemical response and interactions between arbuscular mycorrhizal fungi and plant growth promoting rhizobacteria during establishment and stimulating growth of Arizona cypress (Cupressus arizonica G.) under drought stress

Cited by 76 publications

References 39 publications

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

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

The importance of adverse soil microbiomes in the light of omics: Implications for food safety

Desert Soil Microbes as a Mineral Nutrient Acquisition Tool for Chickpea (Cicer arietinum L.) Productivity at Different Moisture Regimes

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