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5. H2S works synergistically with rhizobia to modify photosynthetic carbon assimilation and metabolism in nitrogen‐deficient soybeans.

Author

Zhang, Ni‐Na, Suo, Bing‐Yu, Yao, Lin‐Lin, Ding, Yu‐Xin, Zhang, Jian‐Hua, Wei, Ge‐Hong, Shangguan, Zhou‐Ping, and Chen, Juan

Subjects
CARBON metabolism, METABOLIC regulation, METABOLISM, GENE expression, GENETIC code, SOYBEAN, NEURAL codes, MEDICAGO
Abstract

Hydrogen sulfide (H2S) performs a crucial role in plant development and abiotic stress responses by interacting with other signalling molecules. However, the synergistic involvement of H2S and rhizobia in photosynthetic carbon (C) metabolism in soybean (Glycine max) under nitrogen (N) deficiency has been largely overlooked. Therefore, we scrutinised how H2S drives photosynthetic C fixation, utilisation, and accumulation in soybean‐rhizobia symbiotic systems. When soybeans encountered N deficiency, organ growth, grain output, and nodule N‐fixation performance were considerably improved owing to H2S and rhizobia. Furthermore, H2S collaborated with rhizobia to actively govern assimilation product generation and transport, modulating C allocation, utilisation, and accumulation. Additionally, H2S and rhizobia profoundly affected critical enzyme activities and coding gene expressions implicated in C fixation, transport, and metabolism. Furthermore, we observed substantial effects of H2S and rhizobia on primary metabolism and C–N coupled metabolic networks in essential organs via C metabolic regulation. Consequently, H2S synergy with rhizobia inspired complex primary metabolism and C–N coupled metabolic pathways by directing the expression of key enzymes and related coding genes involved in C metabolism, stimulating effective C fixation, transport, and distribution, and ultimately improving N fixation, growth, and grain yield in soybeans. Summary Statement: Can H2S effectively modulate photosynthetic C fixation and metabolism in symbiotic soybean‐rhizobia systems? Sufficient and robust data confirmed that H2S synergy with rhizobia promoted the expression of multiple critical enzymes and related coding genes involved in C metabolism to affect crucial primary metabolism and C‐N linked metabolic networks, ensuring efficient C fixation, transport, and allocation and ultimately improving N fixation, growth, and output in N‐deficient soybeans. [ABSTRACT FROM AUTHOR]

Published
2023
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13. Ergosterol peroxides as phospholipase [A.sub.2] inhibitors from the fungus Lactarius hatsudake

Author

Gao, Jin-Ming, Wang, Min, Liu, La-Ping, Wei, Ge-Hong, Zhang, An-Ling, Draghici, Cristina, and Konishi, Yasuo

Subjects
Phytosterols -- Health aspects -- Research, Basidiomycota -- Health aspects -- Research, Biological sciences, Health, Science and technology
Abstract

Abstract Four ergosterol derivatives (1-4) have been isolated for the first time from the fruiting bodies of a basidiomycete fungus, Lactarius hatsudake, through activity-guided fractionation. Their structures were determined, using [...]

Published
2007

17. Effects of sodium hydrosulfide and rhizobia on the growth rate, nutrient stoichiometry, and nutrient resorption of soybean (Glycine max L.)#.

Author

Chen, Juan, Liu, Wu‐Yu, Zhang, Wei‐Qin, Zhang, Ya‐Mei, Zhao, Yi‐Wen, and Wei, Ge‐Hong

Subjects
STOICHIOMETRY, NUTRIENT uptake, SODIUM, HYDROGEN sulfide, MEDICAGO
Abstract

Background and aims: NaHS, a donor of hydrogen sulfide (H2S), which is emerging as a potential signaling molecule, may regulate various physiological processes in plants. However, how soybean (Glycine max L.) responds to NaHS and rhizobia (Sinorhizobium fredii) inoculation remains unclear. Methods: We explored the effects of NaHS and rhizobia on the growth rate, nodules, nitrogenase activities (NA), chlorophyll content, soluble protein content, photosynthesis (Pn), chlorophyll fluorescent parameters, endogenous H2S accumulation, l/d‐cysteine desulfhydrase (GmLCD and GmDCD) gene expression, nitrogen (N), phosphorus (P), potassium (K) contents, and nutrient resorption. Results: The results showed that rhizobia significantly increased the shoot, root, total dry weight, and growth rate, and NaHS promoted nodule numbers and NA in soybean. Moreover, chlorophyll content, soluble protein content, Pn, endogenous H2S accumulation, and GmLCD and GmDCD gene expression levels were promoted by NaHS and rhizobia. In addition, during all growth stages of soybean, the levels of N, P, and K and the N:P ratio in different tissues were affected by NaHS and rhizobia. Additionally, NaHS and rhizobia also significantly enhanced N resorption efficiency (NRE) and K resorption efficiency (KRE), but decreased P resorption efficiency (PRE). Conclusion: Therefore, NaHS and rhizobia regulated the growth rate, nutrient stoichiometry, and nutrient resorption efficiency of soybean. These findings provide information that will be useful for predicting how NaHS and rhizobia lead to variations in nutrient uptake and nutrient conservation strategies. [ABSTRACT FROM AUTHOR]

Published
2022
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19. Microbacterium shaanxiense sp. nov., isolated from the nodule surface of soybean

Author

Wei Ge-hong, Shi Peng, Yang Bingxin, Li Mingjun, and Liu Dongying

Subjects
DNA, Bacterial, China, Molecular Sequence Data, Peptidoglycan, Diamino acid, Biology, medicine.disease_cause, Microbiology, chemistry.chemical_compound, Microbacterium ginsengiterrae, RNA, Ribosomal, 16S, Actinomycetales, medicine, Microbacterium aerolatum, Phospholipids, Phylogeny, Soil Microbiology, Ecology, Evolution, Behavior and Systematics, Base Composition, Strain (chemistry), Fatty Acids, Microbacterium shaanxiense, Nucleic Acid Hybridization, Vitamin K 2, Sequence Analysis, DNA, General Medicine, Ribosomal RNA, Microbacterium profundi, Bacterial Typing Techniques, chemistry, Microbacterium murale, Soybeans, Glycolipids, Root Nodules, Plant
Abstract

A Gram-stain-positive, non-motile, catalase- and oxidase-positive rod, designated CCNWSP60T, was isolated from the nodule surface of soybean [Glycine max (L.) Merrill] cultivar Zhonghuang 13. 16S rRNA gene sequence analysis clearly showed that the isolate belonged to the genus Microbacterium . On the basis of pairwise comparisons of 16S rRNA gene sequences, strain CCNWSP60T was most closely related to Microbacterium murale DSM 22178T (98.8 % similarity), Microbacterium aerolatum DSM 14217T (98.3 %), Microbacterium ginsengiterrae DSM 24823T (98.0 %) and Microbacterium profundi DSM 22239T (97.8 %). However, the DNA–DNA relatedness values of strain CCNWSP60T to M. murale DSM 22178T, M. aerolatum DSM 14217T, M. ginsengiterrae DSM 24823T and M. profundi DSM 22239T were 48 %, 43 %, 28 % and 41 %, respectively. Growth of strain CCNWSP60T occurred at 4–40 °C and at pH 5.0–9.0. The NaCl range for growth was 0–4 % (w/v). The predominant menaquinone of strain CCNWSP60T was MK-13; MK-12 was also detected. The major polar lipids were diphosphatidylglycerol, phosphatidylglycerol, one unidentified glycolipid and one unidentified phospholipid. The diagnostic diamino acid of the peptidoglycan was ornithine. The acyl type of the peptidoglycan was glycolyl. The major fatty acids were anteiso-C15 : 0, iso-C16 : 0 and C16 : 0. The DNA G+C content of the type strain was 67.4 mol%. As the physiological and biochemical characteristics as well as the DNA–DNA relatedness between strain CCNWSP60T and the type strains of its closest phylogenetic neighbours showed clear differences, a novel species Microbacterium shaanxiense is proposed to accommodate it. The type strain is CCNWSP60T ( = DSM 28301T = ACCC 19329T = JCM 30164T).

Published
2015
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20. Sphingobacterium yanglingense sp. nov., isolated from the nodule surface of soybean

Author

Shi Peng, Li Ming Jun, Yang Bing Xin, Wei Ge Hong, and Dong Dan Hong

Subjects
DNA, Bacterial, Sphingobacterium yanglingense, China, Root nodule, Sequence analysis, Molecular Sequence Data, medicine.disease_cause, Microbiology, RNA, Ribosomal, 16S, medicine, Sphingobacterium, Phylogeny, Ecology, Evolution, Behavior and Systematics, Base Composition, Strain (chemistry), biology, Phosphatidylethanolamines, Fatty Acids, Vitamin K 2, Sequence Analysis, DNA, General Medicine, Ribosomal RNA, 16S ribosomal RNA, biology.organism_classification, Molecular biology, Bacterial Typing Techniques, Sphingobacterium nematocida, Biochemistry, Soybeans, Root Nodules, Plant
Abstract

A Gram-staining-negative, non-motile, catalase- and oxidase-positive strain, designated CCNWSP36-1T, was isolated from the nodule surface of soybean [Glycine max (L.) Merrill] cultivar Zhonghuang 13. The 16S rRNA gene sequence analysis clearly showed that the isolate represented a member of the genus Sphingobacterium . On the basis of pairwise comparisons of 16S rRNA gene sequences, strain CCNWSP36-1T showed 96.8 % similarity to Sphingobacterium nematocida CCTCC AB 2010390T and less than 95.2 % similarity to other members of the genus Sphingobacterium . Growth of strain CCNWSP36-1T occurred at 10–40 °C and at pH 5.0–9.0. The NaCl range (w/v) for growth was 0–4 %. The predominant isoprenoid quinone was MK-7. The polar lipids were phosphatidylethanolamine and several unidentified polar lipids. Sphingolipid was present. The major fatty acids were iso-C15 : 0 and summed feature 3 (comprising C16 : 1ω6c and/or C16 : 1ω7c). The G+C content of the genomic DNA was 41.1 mol%. As the physiological and biochemical characteristics of strain CCNWSP36-1T and the type strains of its closest phylogenetic neighbours showed clear differences, a novel species, Sphingobacterium yanglingense, is proposed. The type strain is CCNWSP36-1T ( = ACCC 19328T = JCM 30166T).

Published
2014
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48. Bacillus radicibacter sp. nov., a new bacterium isolated from root nodule of Oxytropis ochrocephala Bunge.

Author

Wei, Xiu Li, Lin, Yan Bing, Xu, Lin, Han, Meng Sha, Dong, Dan Hong, Chen, Wei Min, Wang, Li, and Wei, Ge Hong

Subjects
BACILLUS (Bacteria), OXYTROPIS, BACTERIAL spores, SPOREFORMING bacteria, RHIZOBIUM
Abstract

A Gram-positive, facultative anaerobic, rod-shaped, and endospore-forming strain, designated 53-2T was isolated from the root nodule of Oxytropis ochrocephala Bunge growing on Qilian mountain, China. The strain can grow at pH 7.0-8.0, 10-50 °C and tolerate up to 11% NaCl. Optimal growth occurred at pH 7.2 and 37 °C. The result of BLASTn search based on 16S rRNA gene sequence revealed that strain 53-2T, being closest related to Bacillus acidicola 105-2T, possessed remote similarity (less than 95.64%) to the species within genus Bacillus. The DNA G + C content was 37.8%. Chemotaxonomic data (major quinone is MK-7; major polar lipids are diphosphatidylglycerol, phosphatidylglycerol, unknown phospholipid, and aminoglycophospholipid; fatty acids are anteiso-C15: 0, iso-C15:0 and anteiso-C17: 0) supported the affiliation of the isolate to the genus Bacillus. On the basis of physiological, phylogenetic, and biochemical properties, strain 53-2T represents a novel species within genus Bacillus, for which the name Bacillus radicibacter is proposed. The type strain is 53-2T (=DSM27302T=ACCC06115T=CCNWQLS5T). [ABSTRACT FROM AUTHOR]

Published
2015
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