The Impact of the Arbuscular Mycorrhizal Fungi on Growth and Physiological Parameters of Cowpea Plants Grown under Salt Stress Conditions

Abdel-Fattah, Gamal M.; Rabie, Gamal H.; Lamis, D. Shaaban; Rabab, A. Metwally

doi:10.3126/ijasbt.v4i3.15775

Cited by 18 publications

(9 citation statements)

References 23 publications

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“…In this study, the content of MDA in the M and M +NaCl treatments were significantly lower than in the NM and NM +NaCl treatments ( P < 0.05), which in accordance with Abdel‐Fattah et al (2016). This may be due to a substantial increase in antioxidant activity in mycorrhizal plants leading to less lipid peroxidation, where antioxidants scavenge ROS before they react with the membrane lipids and thus minimize lipid peroxidation (Hashem et al, 2015).…”

Section: Discussionsupporting

confidence: 92%

Arbuscular mycorrhizal fungi can ameliorate salt stress in Elaeagnus angustifolia by improving leaf photosynthetic function and ultrastructure

et al. 2020

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Arbuscular mycorrhizal fungi (AMF) can form symbiosis with Elaeagnus angustifolia, allowing this species to tolerate salt stress. However, the physiological mechanism through which AMF improve E. angustifolia tolerance is still unclear.• In this study, we examined E. angustifolia inoculated with AMF Rhizophagus irregularis (M) or inactivated inoculum (NM) under 0 and 300 mM NaCl stress for the determination of photosynthetic gas exchange, pigment content, chlorophyll fluorescence, antioxidant capacity and chloroplast ultrastructural in leaves.• Photosynthetic gas exchange parameters in the leaves of M and NM decreased significantly under salt stress, while the M treatment significantly reduced the effect of salt stress compared with NM. Various chlorophyll components in the M treatment were two-to three-fold higher than in NM, together with a much more complex chloroplast structure and higher number of plastoglobules. The total flavonoid and proline content in leaves of M increased significantly, while the concentration of malondialdehyde (MDA) decreased significantly under salt stress. Chlorophyll fluorescence data also showed good PSII function in the M treatment, together with salt stress reduction of photochemical reactions and sharp enhancements in non-photosynthetic quenching (NPQ). AMF inoculation ameliorated the inhibition on the actual PSII efficiency (ФPSII) and the photochemical quenching coefficient (q P ) by 10-15%.• Our results clearly demonstrate that R. irregularis can improve the salt tolerance of plants by improving leaf photosynthetic performance, PSII function, antioxidant capacity and leaf chloroplast ultrastructure, and that E. angustifolia inoculated with AMF could enhance saline soil rehabilitation.

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Section: Discussionsupporting

confidence: 92%

Arbuscular mycorrhizal fungi can ameliorate salt stress in Elaeagnus angustifolia by improving leaf photosynthetic function and ultrastructure

et al. 2020

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“…A decline in chlorophyll content in salt-applied fenugreek plants might be ascribed to the possible oxidation of chlorophyll and other chloroplast pigments, coupled with the instability of the pigment-protein complex under salt stress [ 34 ]. Similar results were obtained in cowpea plants by [ 14 ] and [ 35 ] under salt stress conditions. Reduction in the chlorophyll content can be reversed back to a similar level as the control by the foliar application of SA, which might account for the induction of Rubisco activity and synthesis of more carbohydrates in treated plants [ 24 ].…”

Section: Discussionsupporting

confidence: 89%

Physiological Responses of Salinized Fenugreek (Trigonellafoenum-graecum L.) Plants to Foliar Application of Salicylic Acid

Abdelhameed

Latef

Shehata

2021

Plants

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Considering the detrimental effects of salt stress on the physiological mechanisms of plants in terms of growth, development and productivity, intensive efforts are underway to improve plant tolerance to salinity. Hence, an experiment was conducted to assess the impact of the foliar application of salicylic acid (SA; 0.5 mM) on the physiological traits of fenugreek (Trigonellafoenum-graecum L.) plants grown under three salt concentrations (0, 75, and 150 mM NaCl). An increase in salt concentration generated a decrease in the chlorophyll content index (CCI); however, the foliar application of SA boosted the CCI. The malondialdehyde content increased in salt-stressed fenugreek plants, while a reduction in content was observed with SA. Likewise, SA application induced an accumulation of proline, total phenolics, and flavonoids. Moreover, further increases in total free amino acids and shikimic acid were observed with the foliar application of SA, in either control or salt-treated plants. Similar results were obtained for ascorbate peroxidase, peroxidase, polyphenol oxidase, and catalase with SA application. Hence, we concluded that the foliar application of SA ameliorates salinity, and it is a growth regulator that improves the tolerance of fenugreek plants under salt stress.

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“…The ability of cowpea to fix nitrogen through biological nitrogen fixation is a cheap and sustainable alternative to inorganic fertilizers. This is because the performance of cowpea depends on the rhizospheric characteristics; hence, it is able to form a beneficial association with microorganisms present in the rhizosphere (Abdel-Fattah et al, 2016). Rhizobia, a Gram-negative soil rhizobacteria is among the microorganisms present in the cowpea rhizosphere, which establishes a symbiotic association with cowpea (Hamza and Alebejo, 2017).…”

Section: Introductionmentioning

confidence: 99%

Potential of Native Rhizobia to Improve Cowpea Growth and Production in Semiarid Regions of Kenya

Nyaga

Njeru

2020

Front. Agron.

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Cowpea [Vigna unguiculata (L.) Walp] is an important crop for smallholder farmers in the marginal areas of sub-Saharan Africa. However, the crop growth and production are affected by low soil fertility due to poor soil management practices. Here, we assessed the effect of native and commercially available rhizobia inoculants on cowpea nodulation, growth, and yields on three local cowpea genotypes (K-80, M-66, and KVU 27-1) in the semiarid areas of Kenya. Field experiments were set in smallholder farms during the 2019 and 2020 cropping seasons. Native rhizobia were isolated from root nodules of cowpea plants used as trap cultures. The isolates were further assessed for symbiotic efficiency (SE) in the greenhouse and field experiments carried out during the short and long rain seasons. Field experiments were laid out in a randomized complete block design with three replications. The treatments consisted of the commercial inoculant (Biofix), native isolates, native + Biofix (consortium), and an uninoculated control. In the greenhouse, the native isolates significantly increased nodule number and dry weight (DW), shoot DW, and root DW when compared to the uninoculated control. Additionally, 50% of the isolates recorded SE of >80%, while 35.7 and 14.3% of the isolates had SE of 51–80 and <50%, respectively. In the field, rhizobia inoculation significantly (P < 0.05) increased nodulation and shoot DW compared to the uninoculated controls. Remarkably, rhizobia inoculation significantly increased yields where inoculation with native isolates recorded 22.7% increase in yield when compared to uninoculated control in the first season and 28.6% increase in yield in the second season. However, the rhizobia inoculants did not show a preference for any of the cowpea genotypes, and their performance was influenced by season and the study location. Our results demonstrate the existence of superior native isolates with potential to be developed to low-cost biofertilizer for sustainable cowpea production.

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The Impact of the Arbuscular Mycorrhizal Fungi on Growth and Physiological Parameters of Cowpea Plants Grown under Salt Stress Conditions

Cited by 18 publications

References 23 publications

Arbuscular mycorrhizal fungi can ameliorate salt stress in Elaeagnus angustifolia by improving leaf photosynthetic function and ultrastructure

Arbuscular mycorrhizal fungi can ameliorate salt stress in Elaeagnus angustifolia by improving leaf photosynthetic function and ultrastructure

Physiological Responses of Salinized Fenugreek (Trigonellafoenum-graecum L.) Plants to Foliar Application of Salicylic Acid

Potential of Native Rhizobia to Improve Cowpea Growth and Production in Semiarid Regions of Kenya

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