Rhizobium symbiosis contribution to short-term salt stress tolerance in alfalfa (Medicago sativa L.)

Wang, Yafang; Zhang, Zhiqiang; Zhang, Pan; Cao, Yuman; Hu, Tianming; Yang, Peizhi

doi:10.1007/s11104-016-2792-6

Cited by 71 publications

(51 citation statements)

References 64 publications

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“…This is in agreement with earlier studies reported that salt stress induced ion imbalance (Parihar et al, 2015), destruction of membrane permeability (Jabeen et al, 2014;Wang et al, 2016), and oxidative stress (Li et al, 2011), leading to seed germination and plant growth dramatically restricted. If the salt stress exceeded the limits of salttolerant, plants will not germinate, as seen at 200 mM NaCl concentration, in this study, which is in agreement with earlier works (Murkute et al, 2005;Li et al, 2016).…”

Section: Discussionsupporting

confidence: 93%

“…As a result, enhanced antioxidant responses lead to the breeding programs (Li et al, 2011). Plants show low solute potential in salt stress (Sebei et al, 2007;Wang et al, 2016;Parihar et al, 2015), resulting in physiological disorder or death. Salt stress often leads to the burst of reactive oxygen species (ROS) (Li et al, 2011), such as hydrogen peroxide (Almansa et al, 2002), superoxide radical and hydroxyl radical (Ei-Mashad, 2012) in cell, thereby triggering protein degradation (Wang et al, 2014) and the enzymatic antioxidant defense system abnormal (Li et al, 2011;Ei-Mashad, 2012;Keyster et al, 2013).…”

Section: Introductionmentioning

confidence: 99%

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Effects of NaCl Stress on Plant Growth and Antioxidative Defense of Kumquat Seedlings In Vitro

Feng¹,

Zhou²,

Zhang³

et al. 2017

Int. J. Curr. Res. Biosci. Plant Biol.

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Article InfoThis experiment was conducted to determine the effect of salt stress (0, 50, 100, 150 and 200 mM NaCl) on plant growth and antioxidative defense of Kumquat (Fortunella margarita) seedlings in vitro. Stem diameter, leaf number, plant height, root morphology, leaf superoxide dismutase (SOD) and catalase (CAT) activities, and leaf soluble protein content were determined. The Kumquat germination percentage and plant growth significantly reduced with the increasing of NaCl concentrations, and only keeping vitality and no germination in seeds were at 200 mM NaCl concentration. Root biomass and morphological traits (length, projected area, surface area, average diameter, volume, and tips) gradually decreased with the increasing of NaCl concentrations. The leaf soluble protein content and CAT activities of Fortunella margarita significantly decreased with the increasing of NaCl concentrations in vitro, but leaf SOD activities had the highest activity at 50 mM NaCl. It may be suggest that NaCl stress heavily inhibited seed germination at 200 mM level and plant growth and root morphology, and only the kumquat plants possessed an antioxidant enhancement in 50 mM NaCl.

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Section: Discussionsupporting

confidence: 93%

Section: Introductionmentioning

confidence: 99%

Effects of NaCl Stress on Plant Growth and Antioxidative Defense of Kumquat Seedlings In Vitro

Feng¹,

Zhou²,

Zhang³

et al. 2017

Int. J. Curr. Res. Biosci. Plant Biol.

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“…Recently, increasing attention has focused on the utilization of microbes to mediate plant salt tolerance [31][32][33]. Previous studies have shown that endophytic bacteria associated with halophytic plants invariably show high salt tolerance and play important roles in the salt tolerance of host plants [34][35][36].…”

Section: Discussionmentioning

confidence: 99%

The Root Nodule Microbiome of Cultivated and Wild Halophytic Legumes Showed Similar Diversity but Distinct Community Structure in Yellow River Delta Saline Soils

et al. 2020

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Symbiotic associations between leguminous plants and their nodule microbiome play a key role in sustainable agriculture by facilitating the fixation of atmospheric nitrogen and enhancing plant stress resistance. This study aimed to decipher the root nodule microbiome of two halophytic legumes, Sesbania cannabina and Glycine soja, which grow in saline soils of the Yellow River Delta, China, using PacBio’s circular consensus sequencing for full-length bacterial 16S rRNA gene to obtain finer taxonomic information. The cultivated legume Glycine max was used for comparison. We identified 18 bacterial genera and 55 species in nodule samples, which mainly classified to Proteobacteria, and rhizobial genus Ensifer was the predominant group. The three legumes showed similarity in operational taxonomic unit (OTU) diversity but distinction in OTU richness, indicating that they harbor similar bacterial species with different relative contents. The results of principal coordinates analysis and ANOSIM tests indicated that G. soja and G. max have similar nodule bacterial communities, and these communities differ from that of S. cannabina. Wild legumes S. cannabina and G. soja both harbored a higher number of rhizobia, while G. max possessed more non-rhizobial bacteria. These differences could be associated with their adaptability to saline–alkali stress and revealed clues on the nodule endophytes with relative importance of culturable rhizobial symbionts.

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“…Trdan et al (2019) reported that mixture of two PGPB (Pseudomonas fluorescens and Azospirillum brasilense) increased the potato yield 17-31% under dry conditions. Also, investigating data and literature suggested that the reducing effect of salinity on growth aspects of inoculated plants at high salinity was related to root number reduction, root hair deformation (Gopalakrishnan et al 2015), K + ion depletion, carbohydrate composition alteration of bacterial cell surface, bacterial mobility inhibition (Paul and Lade 2014), nodule functions suppress, and photosynthesis rate decrease (Wang et al 2016).…”

Section: Discussionmentioning

confidence: 99%

“…One biological method for decreasing deleterious effects of salinity is application of plant growth-promoting bacteria (PGPB) (Bacilio et al 2004;Shrivastava and Kumar 2015;Trdan et al 2019). Alleviation of salt stress by PGPB has been reported in alfalfa (Noori et al 2018;Wang et al 2016), legume (Zahran 1999), barley (Suarez et al 2015 okra (Habib et al 2016), lettuce (Han and Lee 2005), and pepper (Del Amor and Cuadra-Crespo 2012). Recent studies emphasize on the mitigating effect of PGPB on plants growth by nutrient solubilization, nitrogen fixation, and phytohormone production mechanisms (Dodd, and Pérez-Alfocea 2012;Paul and Lade 2014).…”

Section: Introductionmentioning

confidence: 99%

Salt-tolerant plant growth-promoting bacteria enhanced salinity tolerance of salt-tolerant alfalfa (Medicago sativa L.) cultivars at high salinity

et al. 2019

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Alfalfa (Medicago sativa L.) plant growth decreases when cultivated under salinity or irrigated with salty water. Inoculation with plant growth-promoting bacteria (PGPB) is a method for mitigating the harmful effects of salinity on plants growth. To investigate salt-tolerant PGPB with salt-tolerant and salt-sensitive alfalfa cultivar interactions under salinity, some physiological and agronomical aspects were investigated. The inoculated plants of alfalfa cultivars with Hartmannibacter. diazotrophicus and Pseudomonas sp. bacteria were compared with non-inoculated plants. Plants were grown in growth room and irrigated with tap water until 6-7 weeks, and then, salinity stress imposed by irrigating with tap water (control), 10 dS m −1 and 20 dS m −1 NaCl. Salinity reduced relative water content (RWC), membrane stability index (MSI), K + , photosynthesis rate (Pn) and stomatal conductance (gs), leaf number, height, and dry weight, and increased sodium in all cultivars. Inoculation of cultivars with both PGPB mitigated the negative effects of salinity on plants growth by increasing the root length and weight, nodule number, chlorophyll pigments, RWC, MSI, Pn, and gs. Chlorophyll pigments, plant height and leaf number, Na + , K + /Na + , and nodule number improved more pronounced through inoculating with Pseudomonas sp., whereas K + , carotenoids, and RWC improved more pronounced through H. diazotrophicus under salinity. The results showed inoculation with two bacteria improved growth performance in salt-tolerant and salt-sensitive cultivars under 10 dS m −1 , but at high salinity (20 dS m −1), inoculation was successful only in salt-tolerant alfalfa cultivars.

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Rhizobium symbiosis contribution to short-term salt stress tolerance in alfalfa (Medicago sativa L.)

Cited by 71 publications

References 64 publications

Effects of NaCl Stress on Plant Growth and Antioxidative Defense of Kumquat Seedlings In Vitro

Effects of NaCl Stress on Plant Growth and Antioxidative Defense of Kumquat Seedlings In Vitro

The Root Nodule Microbiome of Cultivated and Wild Halophytic Legumes Showed Similar Diversity but Distinct Community Structure in Yellow River Delta Saline Soils

Salt-tolerant plant growth-promoting bacteria enhanced salinity tolerance of salt-tolerant alfalfa (Medicago sativa L.) cultivars at high salinity

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