Johnson
发表于 2025-3-21 19:52:14
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BOON
发表于 2025-3-21 20:23:18
Lichens to , — with emphasis on ,ificity, mode(s) of infection, morphological modifications/adaptations of the host plant and a synopsis of morphological, physiological and biochemical changes common to the symbiotic cyanobacteria. The latter encompasses heterocyst frequencies, enzymes involved in ammonia assimilation, photosynthet
Bouquet
发表于 2025-3-22 01:13:33
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Ovulation
发表于 2025-3-22 06:26:51
Ecological factors and adaptive processes in N2-fixing bacterial populations of the plant environmenA third mechanism is possible in which ‘pre-adapted’ genes are maintained in soil populations at very low frequencies and energy costs, and whose transfer is triggered by the selective factor to which they constitute an adaptation.
责问
发表于 2025-3-22 09:56:04
Nitrogen fixation associated with roots of Kallar grass (, L. Kunth) very high and photosynthetic activity is reasonably good. N.-fixing bacteria were counted on the same samples by plate count and MPN methods, the latter being estimated on the basis of ARA and pellicle formation. Fairly high numbers of bacteria (10.–10.) were recorded in the histoplane fraction whi
联想
发表于 2025-3-22 15:02:47
Population dynamics of , and its bacteriophage in soillying host cells and exhibit a 1000-fold increase in number. Phage required a host cell population of at least 100–1000 per g of soil in order to multiply. The phage burst detected under these conditions increased as the cell to phage ratio increased. Long term incubation studies showed that the act
Frequency-Range
发表于 2025-3-22 18:47:21
Enrichment of diazotrophic bacteria from rice soil in continuous culturelculated to occur at a substrate concentration of s = 3.0 (mg. l.) with a growth of rate μ = 0.018 h.. Hence the preset nutritional niches occupied by at least two organisms. . seems to represent the copiotroph microflora and Isolate R is of the oligotroph type. In addition to its high substrate aff
一条卷发
发表于 2025-3-22 22:56:50
Biochemistry and physiology of nitrogen fixation with particular emphasis on nitrogen-fixing phototrctivated. Reduced levels of thioredoxin in heterocysts may contribute to the sustained functioning of the oxidative pentose phosphate pathway in heterocysts in the light and dark. In photosynthetic bacteria such as . an activating enzyme which removes a modifying group from inactive Fe protein can a
空气传播
发表于 2025-3-23 02:04:39
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BRIDE
发表于 2025-3-23 06:08:04
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