Two PGPR strains from the rhizosphere of Haloxylon ammodendron promoted growth and enhanced drought tolerance of ryegrass

He, Ao-Lei; Niu, Shuqi; Yang, Deok‐Chun; Wang, Ren; Zhao, Ling-Yü; Sun, Yunya; Meng, Lai-Sheng; Zhao, Qi; Paré, Paul W.; Zhang, Jin‐Lin

doi:10.1016/j.plaphy.2021.02.003

Cited by 70 publications

(18 citation statements)

References 83 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In similar studies [26], using Bacillus velezensis as inoculant of C. sativus, it was observed that the host plant modifies the root structure, which improves water and nutrient uptake, promoting a higher photosynthetic rate. It has been suggested that the modification of the root structure of a cucumber plant is related to the phytohormone indoleacetic acid (IAA) produced by S. meliloti, A. radioresistens, and P. paralactis [11,14,27]. In addition, it has been reported that S. meliloti and A. radioresistens possess the ability to fix nitrogen and solubilize phosphate, resulting in an increase on the number of late-stage roots and root hairs, since these elements are essential for the plant to increase photosynthetic pigments and proteins, which improves photosynthetic activity and rate, having a positive effect on plant development and a greater accumulation of biomass [28,29].Furthermore, it has been pointed out that IAA is associated with cell division and differentiation, which improves the structure of the root system [30][31][32].…”

Section: Discussionmentioning

confidence: 99%

Plant Growth-Promoting Rhizobacteria Improve Growth and Fruit Quality of Cucumber under Greenhouse Conditions

Zapata-Sifuentes

Hernández-Montiel²,

Sáenz‐Mata

et al. 2022

Plants

View full text Add to dashboard Cite

Cucumber fruit is rich in fiber, carbohydrates, protein, magnesium, iron, vitamin B, vitamin C, flavonoids, phenolic compounds, and antioxidants. Agrochemical-based production of cucumber has tripled yields; however, excessive synthetic fertilization has caused problems in the accumulation of salts in the soil and has increased production costs. The objective of this study was to evaluate the effect of three strains of plant growth-promoting rhizobacteria (PGPR) on cucumber fruit growth and quality under greenhouse conditions. The rhizobacteria Pseudomonas paralactis (KBendo6p7), Sinorhizobium meliloti (KBecto9p6), and Acinetobacter radioresistens (KBendo3p1) was adjusted to 1 × 108 CFU mL−1. The results indicated that the inoculation with PGPR improved plant height, stem diameter, root length, secondary roots, biomass, fruit size, fruit diameter, and yield, as well as nutraceutical quality and antioxidant capacity, significantly increasing the response of plants inoculated with A.radioresistens and S.meliloti in comparison to the control. In sum, our findings showed the potential functions of the use of beneficial bacteria such as PGPR for crop production to reduce costs, decrease pollution, and achieve world food safety and security.

show abstract

Section: Discussionmentioning

confidence: 99%

Plant Growth-Promoting Rhizobacteria Improve Growth and Fruit Quality of Cucumber under Greenhouse Conditions

Zapata-Sifuentes

Hernández-Montiel²,

Sáenz‐Mata

et al. 2022

Plants

View full text Add to dashboard Cite

show abstract

“…Therefore, microbes associated with plants initiate their defense mechanism and stabilize their growth after exposure to drought stress. These microbes releases metabolites that build up the stress response and normal growth of associated plants by increasing the root/shoot ratio, developing more biomass, improving the water uptake capacity, improving the bioavailability of nutrients, increasing productivity, and resisting drought (Al-Karaki et al, 2004;Egerton-Warburton et al, 2008;He et al, 2021;Rawal et al, 2022). In return, the root exudates supply additional factors that influence the stress response of these microbes (Gupta et al, 2022).…”

Section: Influence Of Drought As a Results Of Global Climate On Plant...mentioning

confidence: 99%

Impact of key parameters involved with plant-microbe interaction in context to global climate change

Shree

Unnikrishnan²,

Bhushan³

2022

Front. Microbiol.

View full text Add to dashboard Cite

Anthropogenic activities have a critical influence on climate change that directly or indirectly impacts plant and microbial diversity on our planet. Due to climate change, there is an increase in the intensity and frequency of extreme environmental events such as temperature rise, drought, and precipitation. The increase in greenhouse gas emissions such as CO2, CH4, NOx, water vapor, increase in global temperature, and change in rainfall patterns have impacted soil–plant-microbe interactions, which poses a serious threat to food security. Microbes in the soil play an essential role in plants’ resilience to abiotic and biotic stressors. The soil microbial communities are sensitive and responsive to these stressors. Therefore, a systemic approach to climate adaptation will be needed which acknowledges the multidimensional nature of plant-microbe-environment interactions. In the last two scores of years, there has been an enhancement in the understanding of plant’s response to microbes at physiological, biochemical, and molecular levels due to the availability of techniques and tools. This review highlights some of the critical factors influencing plant-microbe interactions under stress. The association and response of microbe and plants as a result of several stresses such as temperature, salinity, metal toxicity, and greenhouse gases are also depicted. New tools to study the molecular complexity of these interactions, such as genomic and sequencing approaches, which provide researchers greater accuracy, reproducibility, and flexibility for exploring plant-microbe–environment interactions under a changing climate, are also discussed in the review, which will be helpful in the development of resistant crops/plants in present and future.

show abstract

“…The solution was diluted twice, and the absorbance at 470 nm was detected by UV spectrophotometry. The value was recorded every 1 min 5 times [ 27 ]. The value of A 470 changing by 0.01 per min was 1 POD activity unit (U).…”

Section: Methodsmentioning

confidence: 99%

Molecular mechanism of mulberry response to drought stress revealed by complementary transcriptomic and iTRAQ analyses

Zhou

et al. 2022

BMC Plant Biol

View full text Add to dashboard Cite

Background The use of mulberry leaves has long been limited to raising silkworms, but with the continuous improvement of mulberry (Morus alba) resource development and utilization, various mulberry leaf extension products have emerged. However, the fresh leaves of mulberry trees have a specific window of time for picking and are susceptible to adverse factors, such as drought stress. Therefore, exploring the molecular mechanism by which mulberry trees resist drought stress and clarifying the regulatory network of the mulberry drought response is the focus of the current work. Results In this study, natural and drought-treated mulberry grafted seedlings were used for transcriptomic and proteomic analyses (CK vs. DS9), aiming to clarify the molecular mechanism of the mulberry drought stress response. Through transcriptome and proteome sequencing, we identified 9889 DEGs and 1893 DEPs enriched in stress-responsive GO functional categories, such as signal transducer activity, antioxidant activity, and transcription regulator activity. KEGG enrichment analysis showed that a large number of codifferentially expressed genes were enriched in flavonoid biosynthesis pathways, hormone signalling pathways, lignin metabolism and other pathways. Through subsequent cooperation analysis, we identified 818 codifferentially expressed genes in the CK vs. DS9 comparison group, including peroxidase (POD), superoxide dismutase (SOD), aldehyde dehydrogenase (ALDHs), glutathione s-transferase (GST) and other genes closely related to the stress response. In addition, we determined that the mulberry gene MaWRKYIII8 (XP_010104968.1) underwent drought- and abscisic acid (ABA)-induced expression, indicating that it may play an important role in the mulberry response to drought stress. Conclusions Our research shows that mulberry can activate proline and ABA biosynthesis pathways and produce a large amount of proline and ABA, which improves the drought resistance of mulberry. MaWRKYIII8 was up-regulated and induced by drought and exogenous ABA, indicating that MaWRKYIII8 may be involved in the mulberry response to drought stress. These studies will help us to analyse the molecular mechanism underlying mulberry drought tolerance and provide important gene information and a theoretical basis for improving mulberry drought tolerance through molecular breeding in the future.

show abstract

Two PGPR strains from the rhizosphere of Haloxylon ammodendron promoted growth and enhanced drought tolerance of ryegrass

Cited by 70 publications

References 83 publications

Plant Growth-Promoting Rhizobacteria Improve Growth and Fruit Quality of Cucumber under Greenhouse Conditions

Plant Growth-Promoting Rhizobacteria Improve Growth and Fruit Quality of Cucumber under Greenhouse Conditions

Impact of key parameters involved with plant-microbe interaction in context to global climate change

Molecular mechanism of mulberry response to drought stress revealed by complementary transcriptomic and iTRAQ analyses

Contact Info

Product

Resources

About