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991.
Huang Haiyue Liu Su Du Jiayan Lin Jianghui Liang Quntao Liu Shutao Wei Zheng 《Glycoconjugate journal》2020,37(2):201-207
Glycoconjugate Journal - Colla corii asini (CCA) made from donkey-hide has been widely used as a traditional animal-based Chinese medicine. Chondroitin sulfate (CS), dermatan sulfate (DS) and... 相似文献
992.
Yu Fujun Dong Buyuan Dong Peihong He Yanghuan Zheng Jianjian Xu Ping 《Molecular and cellular biochemistry》2020,463(1-2):115-126
Molecular and Cellular Biochemistry - Shrm4 is a protein that is exclusively expressed in polarized tissues. The physiological function of Shrm4 in the brain was required to be elucidated. Thus, we... 相似文献
993.
994.
Iron (Fe) is essential for phytoplankton growth and photosynthesis, and is proposed to be an important factor regulating algal blooms under replete major nutrients in coastal environments. Here, Skeletonema costatum, a typical red-tide diatom species, and Chlorella vulgaris, a widely distributed Chlorella, were chosen to examine carbon fixation and Fe uptake by coastal algae under dark and light conditions with different Fe levels. The cellular carbon fixation and intracellular Fe uptake were measured via 14C and 55Fe tracer assay, respectively. Cell growth, cell size, and chlorophyll-α concentration were measured to investigate the algal physiological variation in different treatments. Our results showed that cellular Fe uptake proceeds under dark and the uptake rates were comparable to or even higher than those in the light for both algal species. Fe requirements per unit carbon fixation were also higher in the dark resulting in higher Fe: C ratios. During the experimental period, high Fe addition significantly enhanced cellular carbon fixation and Fe uptake. Compared to C. vulgaris, S. costatum was the common dominant bloom species because of its lower Fe demand but higher Fe uptake rate. This study provides some of the first measurements of Fe quotas in coastal phytoplankton cells, and implies that light and Fe concentrations may influence the phytoplankton community succession when blooms occur in coastal ecosystems. 相似文献
995.
Sen Wang Fei Zheng Meijing Zhang Jun Tu Yanping Chen Jianhua Yuan Qingchang Meng 《Phyton》2020,89(4):861-871
Endosperm mutants are critical to the studies on both starch synthesis
and metabolism and genetic improvement of starch quality in maize. In the present study, a novel maize endosperm mutant A0178 of natural variation was used
as the experimental material and identified and then characterized. Through phenotypic identification, genetic analysis, main ingredients measurement and
embryo rescue, development of genetic mapping population from A0178, the
endosperm mutant gene was located. The results showed that the mutant exhibited
extremely low germination ability as attributed to the inhibited embryo development, and amounts of sugars were accumulated in the mutant seeds and more
sugars content was detected at 23 days after pollination (DAP) in A0178 than
B73. Employing genetic linkage analysis, the mutant trait was mapped in the
bin 5.04 on chromosome 5. Sequence analysis showed that two sites of base transversion and insertion presented in the protein coding region and non-coding
region of the mutant brittle-1 (bt1), the adenylate translocator encoding gene
involved in the starch synthesis. The single base insertion in the coding region
cause frameshift mutation, early termination and lose of function of Brittle-1
(BT1). All results suggested that bt1 is a novel allelic gene and the causal gene
of this endosperm mutant, providing insights on the mechanism of endosperm formation in maize. 相似文献
996.
Plant and Soil - Global change is shown to significantly affect the C storage function of peatlands; however, a majority of previous research is focused on a single environmental stressor such as... 相似文献
997.
Vertical farming using light-emitting diode offers potential for the early production phase (few weeks) of young ornamental plants. However, once transferred to the greenhouse, the photosynthetic acclimation of these young plants might depend on this initial light regime. To obtain insight about this acclimatization, Chrysanthemum (sun species) and Spathiphyllum (shade species) were preconditioned in growth chambers for 4 weeks under four light qualities: blue (B), red (R), red/blue (RB, 60% R) and white (W) at 100 μmol m−2 s−1. Monochromatic light (R and B) limited leaf development of both species, which resulted in a lower leaf mass per area when compared to multispectral light (RB for Chrysanthemum, RB and W for Spathiphyllum). R-developed leaves had a lower photosynthetic efficiency in both species. After the light quality pretreatment, plants were transferred to the greenhouse with high-intensity natural light conditions. On the first day of transfer, R and B preconditioned leaves of both species had an inhibited photosynthesis. After 1 week in natural light condition, rapid light curve parameters of Chrysanthemum leaves that developed under B acclimated to sunlight had a similar level than RB-developed leaves unlike R-leaves. Spathiphyllum leaves showed a decrease in maximum electron transport rate and this was most pronounced for the R pretreatment. After 1 month, R-preconditioned Chrysanthemum had the lowest dry mass, while no effects on the dry weight of Spathiphyllum with respect to the pretreatments were observed. Light quality during preconditioning affected the leaf ability to acclimate to natural high light intensities in greenhouse environment. 相似文献
998.
Kumar P. S. Ling C. Y. Zhou Z. B. Dong Y. L. Sun C. L. Song Y. X. Wong N. K. Ju J. H. 《Microbiology》2020,89(4):483-492
Microbiology - Marine actinobacteria particularly from marine environments are believed to be inexhaustible sources of biologically active molecules for biomedical and industrial applications. We... 相似文献
999.
Wang Y. Tian T. Li X. Tang L. Li Y. Wang H. Zhang J. Zhang L. Zhang X. 《Microbiology》2020,89(1):122-128
Microbiology - An aerobic, gram-negative-staining, motile and rod-shaped bacterium, designated strain 3-BNT, was isolated from sewage sediment collected from Baiyangdian, located in Xiongan New... 相似文献
1000.
Li Bingxin Li Wanyan Tian Yunbo Guo Sixuan Qian Long Xu Danning Cao Nan 《Biological trace element research》2020,193(2):508-516
Biological Trace Element Research - Selenium (Se) has been well recognized as an immune-enhancing agent with antioxidant and anti-tumor properties. The commonly used chemotherapy drug,... 相似文献