Induced Salt Tolerance of Perennial Ryegrass by a Novel Bacterium Strain from the Rhizosphere of a Desert Shrub Haloxylon ammodendron

He, Ao-Lei; Niu, Shuqi; Zhao, Qi; Li, Yongsheng; Gou, Jing-Yi; Gao, Huijuan; Suo, Sheng-Zhou; Zhang, Jin‐Lin

doi:10.3390/ijms19020469

Cited by 71 publications

(43 citation statements)

References 80 publications

(113 reference statements)

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“…Pseudomonas sp. M30-35 was found to contain 34 genes possessing homology with certain genes associated with PGP traits and abiotic stress tolerance (He et al, 2018). Recently, the genome of many ST-PGPR have also been sequenced which envisaged information about their salt tolerance and plant growth promoting attributes.…”

Section: The Diversity Of Salt-tolerant Plant Growth Promoting Rhizobmentioning

confidence: 99%

Salt-Tolerant Plant Growth Promoting Rhizobacteria for Enhancing Crop Productivity of Saline Soils

et al. 2019

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Soil salinity has emerged as a serious issue for global food security. It is estimated that currently about 62 million hectares or 20 percent of the world's irrigated land is affected by salinity. The deposition of an excess amount of soluble salt in cultivable land directly affects crop yields. The uptake of high amount of salt inhibits diverse physiological and metabolic processes of plants even impacting their survival. The conventional methods of reclamation of saline soil which involve scraping, flushing, leaching or adding an amendment (e.g., gypsum, CaCl 2 , etc.) are of limited success and also adversely affect the agro-ecosystems. In this context, developing sustainable methods which increase the productivity of saline soil without harming the environment are necessary. Since long, breeding of salt-tolerant plants and development of salt-resistant crop varieties have also been tried, but these and aforesaid conventional approaches are not able to solve the problem. Salt tolerance and dependence are the characteristics of some microbes. Salt-tolerant microbes can survive in osmotic and ionic stress. Various genera of salt-tolerant plant growth promoting rhizobacteria (ST-PGPR) have been isolated from extreme alkaline, saline, and sodic soils. Many of them are also known to mitigate various biotic and abiotic stresses in plants. In the last few years, potential PGPR enhancing the productivity of plants facing salt-stress have been researched upon suggesting that ST-PGPR can be exploited for the reclamation of saline agro-ecosystems. In this review, ST-PGPR and their potential in enhancing the productivity of saline agro-ecosystems will be discussed. Apart from this, PGPR mediated mechanisms of salt tolerance in different crop plants and future research trends of using ST-PGPR for reclamation of saline soils will also be highlighted.

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Section: The Diversity Of Salt-tolerant Plant Growth Promoting Rhizobmentioning

confidence: 99%

Salt-Tolerant Plant Growth Promoting Rhizobacteria for Enhancing Crop Productivity of Saline Soils

et al. 2019

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“…The electric conductivity (EC) of leaves was measured before and after the heat treatment to assess cell membrane damage, as described by Zhou and Leul [39] and He et al [40] with modifications. In brief, sampled leaves were washed using deionized water, cut into 0.5-cm pieces, and immersed in deionized water for 30min; then, conductivity of the solution was measured using a conductivity meter (PHSJ-3F, Jingmi Instruments Co., Ltd., Shanghai, China) and recorded as S1.…”

Section: Materials and Methods Plant Materials And Phenotypingmentioning

confidence: 99%

QTL-Seq Identifies QTL for Relative Electrical Conductivity Associated with Heat Tolerance in Bottle Gourd (Lagenaria Siceraria)

Song

Huang

2019

Preprint

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Heat is a major abiotic stressor seriously affects watermelon produce; however, its effects may be mitigated through grafting onto heat tolerant bottle gourd rootstock. To understand the genetic basis and select reliable markers are necessary in the variety breeding process. In this paper, the relative electric conductivity (REC) was used as a visual indicator for heat stress to study the genetics and SNP marker of heat tolerance in bottle gourd via QTL-seq approach. The results showed that recessive inheritance and a major QTL locus controlled REC related to heat tolerance. Seven heat-tolerant loci (qHT1. 1, qHT2.1, qHT2.2, qHT5.1, qHT6.1, qHT7.1, and qHT8.1) exhibited high Δ(SNP-index) values (ranging from 0.19-0.38), and of these, the greatest value (0.32, P < 0.01) and greatest number of detected SNPs (9052) were found in chromosome 2 at qHT2.1 region (11.03 -19.25 Mb); qHT2.1was taken as a promising major QTL for heat tolerance in bottle gourd. A total of 34 putative candidate genes related to heat stress were detected within the qHT2.1 region. Three polymorphic SNPs (BG_GLEAN_10022642, BG_GLEAN_10022727, and BG_GLEAN_10022589) that are involved in pollen sterility, intracellular transport, and signal recognition were validated and exhibited significant marker-trait association that could be used in heat tolerant molecular breeding for bottle gourd. The qHT2.1region is an important finding can be used for fine mapping and discovering new genes associated with heat tolerance in bottle gourd.

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“…Additionally, exogenous cytokinin applications alleviated salt-induced leaf senescence in perennial ryegrass [8]. Furthermore, salt tolerance of perennial ryegrass can increase by a novel bacterium strain from the rhizosphere of a desert shrub Haloxylon ammodendron induced [95].…”

Section: Responses Of Salt Stress In Perennial Ryegrassmentioning

confidence: 97%

Plant Growth and Morphophysiological Modifications in Perennial Ryegrass under Environmental Stress

Xie¹,

Datta²,

Qin³

2021

Abiotic Stress in Plants

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Perennial ryegrass (Lolium perenne L.) is a popular and important cool-season turfgrass used in parks, landscapes, sports fields, and golf courses, and it has significant ecological, environmental, and economic values. It is also widely used as forage and pasture grass for animals around the world. However, the growth of perennial ryegrass is often affected by various abiotic stresses, which cause declines in turf quality and forage production. Among abiotic stresses, drought, salinity, temperature, and heavy metal are the most detrimental factors for perennial ryegrass growth in different regions, which result in growth inhibition, cell structure damage, and metabolic dysfunction. Many researches have revealed a lot useful information for understanding the mechanism of tolerance to adverse stresses at morphophysiological level. In this chapter, we will give a systematic literature review about morphological and physiological changes of perennial ryegrass in response to main stress factors and provide detail aspects of improving perennial ryegrass resistance based on research progress. Understanding morphophysiological response in perennial ryegrass under stress will contribute to improving further insights on fundamental mechanisms of perennial ryegrass stress tolerance and providing valuable information for breeding resistance cultivars of perennial ryegrass.

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Induced Salt Tolerance of Perennial Ryegrass by a Novel Bacterium Strain from the Rhizosphere of a Desert Shrub Haloxylon ammodendron

Cited by 71 publications

References 80 publications

Salt-Tolerant Plant Growth Promoting Rhizobacteria for Enhancing Crop Productivity of Saline Soils

Salt-Tolerant Plant Growth Promoting Rhizobacteria for Enhancing Crop Productivity of Saline Soils

QTL-Seq Identifies QTL for Relative Electrical Conductivity Associated with Heat Tolerance in Bottle Gourd (Lagenaria Siceraria)

Plant Growth and Morphophysiological Modifications in Perennial Ryegrass under Environmental Stress

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