Physiological response of Cucurbita pepo var. pepo mycorrhized by Sonoran desert native arbuscular fungi to drought and salinity stresses

Harris-Valle, Citlalli; Esqueda, Martín; Gutiérrez, Aldo; Castellanos, Alejandro E.; Gardea, Alfonso A.; Berbara, Ricardo Luís Louro

doi:10.1016/j.bjm.2017.04.005

Cited by 18 publications

(6 citation statements)

References 27 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Living an obligate lifestyle, AMF only use the carbon provided by the plant directly (Jiang et al, 2017), thus their relationship was more intimate. In the desert system, where the original inoculum was collected, the symbiosis between plant and AMF should be highly efficient to survive, thus the positive effects induced by AMF inoculation were not surprising, as reported in other studies using indigenous AMF and grown in the desert soil or the desert environment (Requena et al, 2001;Bashan et al, 2009;Zhang et al, 2012Zhang et al, , 2019Harris-Valle et al, 2018).…”

Section: Plant Mycorrhizal Responses Depend On the Combination Of Hos...mentioning

confidence: 52%

Specific Plant Mycorrhizal Responses Are Linked to Mycorrhizal Fungal Species Interactions

Guo

Wang

et al. 2022

Front. Plant Sci.

View full text Add to dashboard Cite

Effects of arbuscular mycorrhizal fungi (AMF) on plants span the continuum from mutualism to parasitism due to the plant–AMF specificity, which obscures the utilization of AMF in the restoration of degraded lands. Caragana korshinskii, Hedysarum laeve, Caragana microphylla, and Poa annua are the most frequently used plants for revegetation in Kubuqi Desert, China, and the influence of AMF on their re-establishment remains to be explored further. Herein, using a greenhouse experiment, we tested the plant–AMF feedbacks between the four plant species and their conspecific or heterospecific AMF, retrieved from their rhizosphere in the Kubuqi Desert. AMF showed beneficial effects on plant growth for all these plant-AMF pairs. Generally, AMF increased the biomass of C. korshinskii, H. laeve, C. microphylla, and P. annua by 97.6, 50.6, 46.5, and 381.1%, respectively, relative to control. In addition, the AMF-plant specificity was detected. P. annua grew best, but C. microphylla grew worst with conspecific AMF communities. AMF community from P. annua showed the largest beneficial effect on all the plants (with biomass increased by 63.9–734.4%), while the AMF community from C. microphylla showed the least beneficial effect on all the plants (with biomass increased by 9.9–59.1%), except for P. annua (a 292.4% increase in biomass). The magnitude of AMF effects on plant growth was negatively correlated with the complexity of the corresponding AMF co-occurrence networks. Overall, this study suggests that AMF effects on plant growth vary due to plant-AMF specificity. We also observed the broad-spectrum benefits of the native AMF from P. annua, which indicates its potential utilization in the restoration of the desert vegetation.

show abstract

Section: Plant Mycorrhizal Responses Depend On the Combination Of Hos...mentioning

confidence: 52%

Specific Plant Mycorrhizal Responses Are Linked to Mycorrhizal Fungal Species Interactions

Guo

Wang

et al. 2022

Front. Plant Sci.

View full text Add to dashboard Cite

show abstract

“…Interaction of AMF with plants could alleviate salt stress-induced reduction in plant health, productivity, leaf area, and biomass together with improved root to shoot dry mass ratio (Sheng et al, 2008; Hajiboland et al, 2010; Yang et al, 2016; Elhindi et al, 2017). The beneficial symbiosis arose partly due to modification of the fungi's environment and development of extensive mycelial extensions modulating water absorption and retention, soil volume and AMF-host water relations (Harris-Valle et al, 2018). Additionally, these effects are metabolically connected to Na + exclusion, facilitating down-regulation of toxic Na + build-up concomitant to selective absorption of K + due to AMF-plant symbiosis (Jahromi et al, 2008; Sheng et al, 2008; Evelin et al, 2009; Porcel et al, 2012; Chandrasekaran et al, 2016).…”

Section: Discussionmentioning

confidence: 99%

Impact of Arbuscular Mycorrhizal Fungi on Photosynthesis, Water Status, and Gas Exchange of Plants Under Salt Stress–A Meta-Analysis

et al. 2019

View full text Add to dashboard Cite

Soil salinization is one of the most serious abiotic stress factors affecting plant productivity through reduction of soil water potential, decreasing the absorptive capacity of the roots for water and nutrients. A weighted meta-analysis was conducted to study the effects of arbuscular mycorrhizal fungi (AMF) inoculation in alleviating salt stress in C 3 and C 4 plants. We analyzed the salt stress influence on seven independent variables such as chlorophyll, leaf area, photosynthetic rate ( Amax ), stomatal conductance ( Gs ), transpiration rate ( E ), relative water content (RWC), and water use efficiency (WUE) on AMF inoculated plants. Responses were compared between C 3 and C 4 plants, AMF species, plant functional groups, level of salinity, and environmental conditions. Our results showed that AMF inoculated plants had a positive impact on gas exchange and water status under salt stress. The total chlorophyll contents of C 3 plants were higher than C 4 plants. However, C 3 plants responses regarding Gs, Amax , and E were more positive compared to C 4 plants. The increase in G s mainly maintained E and it explains the increase in Amax and increase in E . When the two major AMF species ( Rhizophagus intraradices and Funnelliformis mosseae ) were considered, the effect sizes of RWC and WUE in R. intraradices were lower than those in F. mosseae indicating that F. mosseae inoculated plants performed better under salt stress. In terms of C 3 and C 4 plant photosynthetic pathways, the effect size of C 4 was lower than C 3 plants indicating that AMF inoculation more effectively alleviated salt stress in C 3 compared to C 4 plants.

show abstract

“…Similar observations have been reported in Trigonella foenum-graecum (Evelin et al, 2012), Medicago sativa (Campanelli et al, 2013), Ephedra aphylla (Alqarawi et al, 2014), and Cucurbita pepo var. pepo (Harris-Valle et al, 2018). Better root system enables the plant to track non-saline areas for water and minerals until exploitation of salt areas become indispensable (Wu et al, 2010; Campanelli et al, 2013; Alqarawi et al, 2014).…”

Section: Mechanisms Of Salt Tolerance In M Plantsmentioning

confidence: 99%

Mitigation of Salinity Stress in Plants by Arbuscular Mycorrhizal Symbiosis: Current Understanding and New Challenges

et al. 2019

View full text Add to dashboard Cite

Modern agriculture is facing twin challenge of ensuring global food security and executing it in a sustainable manner. However, the rapidly expanding salinity stress in cultivable areas poses a major peril to crop yield. Among various biotechnological techniques being used to reduce the negative effects of salinity, the use of arbuscular mycorrhizal fungi (AMF) is considered to be an efficient approach for bio-amelioration of salinity stress. AMF deploy an array of biochemical and physiological mechanisms that act in a concerted manner to provide more salinity tolerance to the host plant. Some of the well-known mechanisms include improved nutrient uptake and maintenance of ionic homeostasis, superior water use efficiency and osmoprotection, enhanced photosynthetic efficiency, preservation of cell ultrastructure, and reinforced antioxidant metabolism. Molecular studies in past one decade have further elucidated the processes involved in amelioration of salt stress in mycorrhizal plants. The participating AMF induce expression of genes involved in Na + extrusion to the soil solution, K + acquisition (by phloem loading and unloading) and release into the xylem, therefore maintaining favorable Na + :K + ratio. Colonization by AMF differentially affects expression of plasma membrane and tonoplast aquaporins (PIPs and TIPs), which consequently improves water status of the plant. Formation of AM (arbuscular mycorrhiza) surges the capacity of plant to mend photosystem-II (PSII) and boosts quantum efficiency of PSII under salt stress conditions by mounting the transcript levels of chloroplast genes encoding antenna proteins involved in transfer of excitation energy. Furthermore, AM-induced interplay of phytohormones, including strigolactones, abscisic acid, gibberellic acid, salicylic acid, and jasmonic acid have also been associated with the salt tolerance mechanism. This review comprehensively covers major research advances on physiological, biochemical, and molecular mechanisms implicated in AM-induced salt stress tolerance in plants. The review identifies the challenges involved in the application of AM in alleviation of salt stress in plants in order to improve crop productivity.

show abstract

Physiological response of Cucurbita pepo var. pepo mycorrhized by Sonoran desert native arbuscular fungi to drought and salinity stresses

Cited by 18 publications

References 27 publications

Specific Plant Mycorrhizal Responses Are Linked to Mycorrhizal Fungal Species Interactions

Specific Plant Mycorrhizal Responses Are Linked to Mycorrhizal Fungal Species Interactions

Impact of Arbuscular Mycorrhizal Fungi on Photosynthesis, Water Status, and Gas Exchange of Plants Under Salt Stress–A Meta-Analysis

Mitigation of Salinity Stress in Plants by Arbuscular Mycorrhizal Symbiosis: Current Understanding and New Challenges

Contact Info

Product

Resources

About