The Fodder Legume Chamaecytisus albidus Establishes Functional Symbiosis with Different Bradyrhizobial Symbiovars in Morocco

Bouhnik, Omar; Alami, Soufiane; Lamin, Hanane; Lamrabet, Mouad; Bennis, Meryeme; Ouajdi, Mohammed; Bellaka, Mhammed; Antri, Salwa El; Abbas, Younes; Abdelmoumen, Hanaa; Bedmar, Eulogio J.; Idrissi, Mustapha Missbah El

doi:10.1007/s00248-021-01888-4

Cited by 7 publications

(4 citation statements)

References 74 publications

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“…It shown that strain 'QHCD11' exhibited better drought tolerance in higher PEG osmotic solution and better than ' ACCC15854' . Our findings are in line with the results of Bouhnik et al (2022), who found the ability of the rhizobial strains isolated from the arid zones to grow in high concentrations of PEG-6000 could probably be due to adaptation to their original soils conditions. Some researchers point out that inoculation of seeds with Rhizobium improved abiotic stress tolerance, it is attributed to produce light molecular weight organic solutes such as glycine betaine, proline, polyamines and ectoines, and these solutes protect the plant cells by stabilizing the structure and conformation of proteins as well as cell membranes from water stress, desiccation; increase photosynthetic and biomass productivity and also play role in the enhancement of the activity of various enzymatic and non-enzymatic antioxidants (Santos and Costa, 2002;Yurgel et al, 2013).…”

Section: Discussionsupporting

confidence: 92%

“…It shown that strain ‘QHCD11’ exhibited better drought tolerance in higher PEG osmotic solution and better than ‘ACCC15854’. Our findings are in line with the results of Bouhnik et al (2022) , who found the ability of the rhizobial strains isolated from the arid zones to grow in high concentrations of PEG-6000 could probably be due to adaptation to their original soils conditions.…”

Section: Discussionsupporting

confidence: 92%

“…Abiotic stresses are stress conditions to plants arising from the environment, it not only affected plants but also affect microbes. Many studies have shown that strains with drought tolerance can be screened out in arid environment, and inoculation of rhizobia can improve the growth of crops under abiotic stress conditions, increases crop yield and stress resistance ( Enebe and Babalola, 2018 ; Bouhnik et al, 2022 ). Strain QHCD11 was identified by 16 s rRNA and whole genome sequencing as Rhizobium indicum species Rahi et al (2020) study found that Rhizobium indicum sp.…”

Section: Discussionmentioning

confidence: 99%

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Characterization of drought stress-mitigating Rhizobium from faba bean (Vicia faba L.) in the Chinese Qinghai-Tibet Plateau

Li,

Teng,

Zhang

et al. 2023

Front. Microbiol.

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Rhizobium-driven symbiotic nitrogen-fixation in legumes not only benefits the growth but also enhances the stress tolerance of plants. Isolating and characterizing efficient, drought-tolerant rhizobia is a central goal for improving crop yields in arid regions. Here, we phylogenetically and biochemically characterized a novel strain of Rhizobium (‘QHCD11’) sampled from the root nodules of faba beans growing in an arid agricultural area in Qinghai-Tibet. We further tested the drought tolerance of the strain as well as of ‘Qingcan 14’ faba bean seedlings inoculated with it. Biochemical characterization involved bromothymol blue (BTB) tests, carbon metabolic profiling (Biolog GENIII), DNA–DNA hybridization (dDDH) assays, average nucleotide identity (ANI) analyses, and 16S rRNA sequencing. The result indicated that strain ‘QHCD11’ likely belongs to the Rhizobium indicum species. Drought stress tolerance was assessed by exposure to polyethylene glycol (PEG-6000) at concentrations of 0, 10, 15, and 20%. Increasing concentrations of PEG-6000 tended to result in decreased growth of ‘QHCD11’, although the strain performed better at 20% PEG 6000 than at 15%. Inoculation of drought-stressed faba bean seedlings with strain ‘QHCD11’ improved root vitality, chlorophyll content, antioxidant enzyme activities, and plant height. We suggest that inoculation of faba beans with ‘QHCD11’ is an environmentally sound strategy for mitigating crop drought stress in arid and semi-arid regions. In addition, the results presents here will benefit future studies into faba bean-rhizobia symbioses under drought stress.

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Section: Discussionsupporting

confidence: 92%

Section: Discussionsupporting

confidence: 92%

Section: Discussionmentioning

confidence: 99%

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Characterization of drought stress-mitigating Rhizobium from faba bean (Vicia faba L.) in the Chinese Qinghai-Tibet Plateau

Li,

Teng,

Zhang

et al. 2023

Front. Microbiol.

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“…It is now established that soil pH is one of the main drivers of soil microbial community composition and, in particular, has a strong influence on the abundance of N 2 ‐fixing bacteria (Lemaire et al ., 2015; Fierer, 2017; de Castro et al ., 2018; Ramoneda et al ., 2023; Sepp et al ., 2023). Alkaline soils limit the growth and survival of some species of Bradyrhizobia and may limit their geographical range (Tang et al ., 1991; Graham, 1992; Rathi et al ., 2018; Bouhnik et al ., 2022). Furthermore, it is well known that in alkaline soils, such as Adulam soil, the availability of iron is greatly reduced (Colombo et al ., 2014) which may inhibit both nodulation and the N 2 fixation process itself (Rupela & Saxena, 1987; Tang et al ., 1991).…”

Section: Discussionmentioning

confidence: 99%

The native distribution of a common legume shrub is limited by the range of its nitrogen‐fixing mutualist

Alon,

Waitz,

Finkel

et al. 2024

New Phytologist

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Summary Plant–microbe mutualisms, such as the legume‐rhizobium symbiosis, are influenced by the geographical distributions of both partners. However, limitations on the native range of legumes, resulting from the absence of a compatible mutualist, have rarely been explored. We used a combination of a large‐scale field survey and controlled experiments to determine the realized niche of Calicotome villosa, an abundant and widespread legume shrub. Soil type was a major factor affecting the distribution and abundance of C. villosa. In addition, we found a large region within its range in which neither C. villosa nor Bradyrhizobium, the bacterial genus that associates with it, were present. Seedlings grown in soil from this region failed to nodulate and were deficient in nitrogen. Inoculation of this soil with Bradyrhizobium isolated from root nodules of C. villosa resulted in the formation of nodules and higher growth rate, leaf N and shoot biomass compared with un‐inoculated plants. We present evidence for the exclusion of a legume from parts of its native range by the absence of a compatible mutualist. This result highlights the importance of the co‐distribution of both the host plant and its mutualist when attempting to understand present and future geographical distributions of legumes.

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The inoculation with Ensifer meliloti sv. rigiduloides improves considerably the growth of Robinia pseudoacacia under lead-stress

et al. 2023

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The Fodder Legume Chamaecytisus albidus Establishes Functional Symbiosis with Different Bradyrhizobial Symbiovars in Morocco

Cited by 7 publications

References 74 publications

Characterization of drought stress-mitigating Rhizobium from faba bean (Vicia faba L.) in the Chinese Qinghai-Tibet Plateau

Characterization of drought stress-mitigating Rhizobium from faba bean (Vicia faba L.) in the Chinese Qinghai-Tibet Plateau

The native distribution of a common legume shrub is limited by the range of its nitrogen‐fixing mutualist

The inoculation with Ensifer meliloti sv. rigiduloides improves considerably the growth of Robinia pseudoacacia under lead-stress

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