Siderophores, a potential phosphate solubilizer from the endophyte Streptomyces sp. CoT10, improved phosphorus mobilization for host plant growth and rhizosphere modulation

Cui, Kunpeng; Xu, Ting; Chen, Jiawei; Yang, H.; Liu, Xuanming; Zhuo, Rui; Peng, Yinghe; Tang, Wei; Wang, Rui; Chen, Longsheng; Zhang, Xuan; Zhang, Zhen; He, Zhilong; Wang, Xiangnan; Liu, Caixia; Chen, Yongzhong; Zhu, Yonghua

doi:10.1016/j.jclepro.2022.133110

Cited by 34 publications

(19 citation statements)

References 58 publications

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“…4, 5). Several new studies, suggesting that P‐limited bacteria produce ligands or redox reactive antibiotics that can solubilize Fe‐minerals and foster P release, further support these ideas (Romano et al 2017; McRose and Newman 2021; Cui et al 2022). Our findings are relevant to many ocean regions, such as the North Atlantic Gyre, where Trichodesmium populations are co‐limited by Fe and P (Held et al 2020; Cerdan‐Garcia et al 2022).…”

Section: Discussionmentioning

confidence: 92%

“…These pathways differ in their specificity, but in conjunction increase the flux of multiple dissolved nutrients and elements (including toxic metals). Since P is often associated with Fe minerals, pathways involving reductive or ligand‐promoted dissolution are expected to increase both Fe and P supply to microorganisms and plants (Romano et al 2017; McRose and Newman 2021; Cui et al 2022).…”

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confidence: 99%

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Co‐acquisition of mineral‐bound iron and phosphorus by natural Trichodesmium colonies

Shaked

Beer

Wang

et al. 2023

Limnology & Oceanography

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Low iron (Fe) and phosphorus (P) ocean regions are often home to the globally important N 2 -fixing cyanobacterium Trichodesmium spp., which are physiologically adapted to Fe/P co-limitation. Given Trichodesmium's eminent ability to capture particles and the common associations between Fe and P in sediments and aerosols, we hypothesized that mineral bio-dissolution by Trichodesmium spp. may enable them to co-acquire Fe and P. We present a new sensitive assay to determine P uptake from particles, utilizing 33 P-labeled ferrihydrite. To validate the method, we examined single natural Trichodesmium thiebautii colonies in a high-resolution radiotracer ß-imager, identifying strong colony-mineral interactions, efficient removal of external 33 P-labeled ferrihydrite, and elevated 33 P uptake in the colony core. Next, we determined bulk P uptake rates, comparing natural Red Sea colonies and P-limited Trichodesmium erythraeum cultures. Uptake rates by natural and cultured Trichodesmium were similar to P release rates from the mineral, suggesting tight coupling between dissolution and uptake. Finally, synthesizing P-ferrihydrite labeled with either 33 P or 55 Fe, we probed for Fe/P co-extraction by common microbial mineral solubilization pathways. Dissolution rates of ferrihydrite were accelerated by exogenous superoxide and strong Fe-chelator and subsequently enhanced 33 P release and uptake by Trichodesmium. Our method and findings can facilitate further Fe/P co-acquisition studies and highlight the importance of biological mechanisms and microenvironments in controlling bioavailability and nutrient fluxes from particles.

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Section: Discussionmentioning

confidence: 92%

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confidence: 99%

Co‐acquisition of mineral‐bound iron and phosphorus by natural Trichodesmium colonies

Shaked

Beer

Wang

et al. 2023

Limnology & Oceanography

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“…Remarkably, Streptomyces sp. CoT10 mobilized different P resources, particularly 72.49 mg/L of FePO 4 , consequently improving phosphate content in soil by 15.35%, which supplied plant growth with high P and Fe acquisition [ 61 ]. On the same trend, Pantoea sp.…”

Section: Discussionmentioning

confidence: 99%

Exploring the Plant Growth-Promotion of Four Streptomyces Strains from Rhizosphere Soil to Enhance Cucumber Growth and Yield

Omar

Abdelmageed

Alturki

et al. 2022

Plants

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The genus Streptomyces is the most abundant and essential microbes in the soil microbial community. Streptomyces are familiar and have great potential to produce a large variety of bioactive compounds. This genus considers an efficient biofertilizer based on its plant growth-promoting activities. Based on their ability to produce a wide varieties of bioactive molecules, the present study aimed to explore the potential plant growth promotion of four Streptomyces strains and their role in enhancing cucumber growth and yield under greenhouse conditions. Streptomyces sp. strain HM2, Streptomyces thinghirensis strain HM3, Streptomyces sp. strain HM8, and Streptomyces tricolor strain HM10 were chosen for the current study. Plant growth-promoting (PGP) features, i.e., indole acetic acid (IAA) production, siderophore excretion, and solubilizing phosphate, were evaluated in vitro. All four strains produced IAA, siderophore, and immobilized inorganic phosphate. Following 4 days of incubation at 30 °C, strains HM2, HM3, HM8, and HM10 produced copious amounts of IAA (18, 22, 62, and 146 µg/mL, respectively) and siderophores (42.59, 40.01, 16.84, 64.14% SU, respectively). At the same time, P solubilization efficacy scored 64.3%, 84.4%, 57.2%, and 81.6% with the same frequency. During in planta evaluation, selected Streptomyces strains combined with rock phosphate were assessed as biofertilizers on the growth and yield of cucumber plants. Under all treatments, positive and significant differences in studied traits were manifested except dry stem matter (SDM), net assimilation rate (NAR), relative growth rate (RGR), and fruit firmness (FF). Treatment T4 (rock phosphate + strain HM3) followed by T5 (rock phosphate + strain HM8) revealed the best results for plant height (PH), number of leaves per plant (NLPP), root length (RL), number of fruits per plant (NFPP), fruit length (FL), fruit diameter (FD), fruit fresh weight per plant (FFWPP), soil P (SP) after 21 DAT, and soil P at the end of the experiment. Notably, T6 (rock phosphate + strain HM10) caused a considerable increase in leaf area (LA). Plant growth-promoting bacteria enhance plant growth and yield through phosphorus solubilizing, improve nutrient availability, produce phytohormones, and support plant growth under abiotic stress. These features are important for sustainable agriculture and reducing environmental pollution with chemical fertilizers and pesticides.

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“…Compared with rhizosphere soil microorganisms, endophytes that live symbiotically in internal plant tissues positively impact plant physiology more (Dutta et al, 2014). Among the beneficial endophytes, actinobacteria, especially Streptomyces, are high-quality resource pools with numerous secondary metabolites (Cui et al, 2022). Some endophytic Streptomyces has reportedly induced systemic tolerance to abiotic stressors in plants.…”

Section: Introductionmentioning

confidence: 99%

“…Furthermore, Endophyte B26 improved Phleum pratense L. growth by altering osmolyte accumulation in roots and shoots (Gagne-Bourque et al, 2016). To date, there are only a few reports on endophytic actinobacteria promoting phosphorus nutrient uptake and growth in C. oleifera (Cui et al, 2022). In comparison, there are even fewer reports on using endophytic Streptomyces to assist C. oleifera in resisting drought stress.…”

Section: Introductionmentioning

confidence: 99%

Multi-omics joint analysis reveals how Streptomyces albidoflavus OsiLf-2 assists Camellia oleifera to resist drought stress and improve fruit quality

He¹,

Cui

Wang³

et al. 2023

Front. Microbiol.

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Camellia oleifera (C. oleifera) is a unique edible oil crop in China cultivated in the hilly southern mountains. Although C. oleifera is classified as a drought-tolerant tree species, drought remains the main factor limiting the growth of C. oleifera in summer and autumn. Using endophytes to improve crop drought tolerance is one effective strategy to meet our growing food crop demand. In this study, we showed that endophyte Streptomyces albidoflavus OsiLf-2 could mitigate the negative impact of drought stress on C. oleifera, thus improving seed, oil, and fruit quality. Microbiome analysis revealed that OsiLf-2 treatment significantly affected the microbial community structure in the rhizosphere soil of C. oleifera, decreasing both the diversity and abundance of the soil microbe. Likewise, transcriptome and metabolome analyses found that OsiLf-2 protected plant cells from drought stress by reducing root cell water loss and synthesizing osmoregulatory substances, polysaccharides, and sugar alcohols in roots. Moreover, we observed that OsiLf-2 could induce the host to resist drought stress by increasing its peroxidase activity and synthesizing antioxidants such as cysteine. A multi-omics joint analysis of microbiomes, transcriptomes, and metabolomes revealed OsiLf-2 assists C. oleifera in resisting drought stress. This study provides theoretical and technical support for future research on endophytes application to enhance the drought resistance, yield, and quality of C. oleifera.

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Siderophores, a potential phosphate solubilizer from the endophyte Streptomyces sp. CoT10, improved phosphorus mobilization for host plant growth and rhizosphere modulation

Cited by 34 publications

References 58 publications

Co‐acquisition of mineral‐bound iron and phosphorus by natural Trichodesmium colonies

Co‐acquisition of mineral‐bound iron and phosphorus by natural Trichodesmium colonies

Exploring the Plant Growth-Promotion of Four Streptomyces Strains from Rhizosphere Soil to Enhance Cucumber Growth and Yield

Multi-omics joint analysis reveals how Streptomyces albidoflavus OsiLf-2 assists Camellia oleifera to resist drought stress and improve fruit quality

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