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Association among growth, food consumption-related traits and amylase gene polymorphism in the Pacific oyster Crassostrea gigas 总被引:1,自引:0,他引:1
Huvet A Jeffroy F Fabioux C Daniel JY Quillien V Van Wormhoudt A Moal J Samain JF Boudry P Pouvreau S 《Animal genetics》2008,39(6):662-665
To examine further a previously reported association between amylase gene polymorphism and growth in the Pacific oyster Crassostrea gigas, ecophysiological parameters and biochemical and molecular expression levels of alpha-amylase were studied in Pacific oysters of different amylase genotypes. Genotypes that previously displayed significantly different growth were found to be significantly different for ingestion and absorption efficiency. These estimated parameters, used in a dynamic energy budget model, showed that observed ingestion rates (unlike absorption efficiencies) allowed an accurate prediction of growth potential in these genotypes. The observed association between growth and amylase gene polymorphism is therefore more likely to be related to ingestion than to absorption efficiency. Additionally, relative mRNA levels of the two amylase cDNAs were also strongly associated with amylase gene polymorphism, possibly reflecting variation in an undefined regulatory region, although no corresponding variation was observed in specific amylase activity. Amylase gene sequences were determined for each genotype, showing the existence of only synonymous or functionally equivalent non-synonymous polymorphisms. The observed associations among growth, food consumption-related traits and amylase gene polymorphism are therefore more likely to be related to variation in the level of amylase gene expression than to functional enzymatic variants. 相似文献
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Radiofrequency lesions were made in each structure of the Limbic Midbrain Area (LMA) : Gudden nuclei, raphe nuclei, mesencephalic ventral tegmentum (VMT), and locomotor activity was measured in a circular corridor 10 and 30 days after surgery. The first hour of exploration, the nocturnal basal activity and the diurnal basal activity were distinguished. During the exploratory phase the Gudden nuclei and VMT lesions induced hyperactivity, while dorsal raphe lesions provoked significant hypoactivity; during the light period VMT lesions and, to a less extent, dorsal Gudden nucleus lesions provoked hyperactivity. From these results it is assumed that the VMT represents a specific part of the LMA, where lesions provoked the most important activity disturbances. 相似文献
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Seeds of Kochia indica Wight germinate rapidly in shallow water,but their germination is retarded on moist filter-paper. Theretardation is traced to a surface-active, saponin-like inhibitor,which is readily leached away in water and is adsorbed by charcoalor soil. Excised embryos may also remain dormant on filter-paper,but if rinsed in water quickly become active. Inhibition isfavoured by higher temperature (30°C. as against 20°or less), especially in an atmosphere of oxygen, although onceactive the embryos grow rapidly in such conditions. When theoxygen concentration is reduced to 5 per cent., germinationand growth are markedly retarded, but 5 per cent. CO2 has littleor no retarding effect. 相似文献
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Md. Ashraful Alam Milan Skalicky Muhammad Rezaul Kabir Md. Monwar Hossain Md. Abdul Hakim Md. Siddikun Nabi Mandal Rabiul Islam Md. Babul Anwar Akbar Hossain Fahmy Hassan Amaal Mohammadein Muhammad Aamir Iqbal Marian Brestic Mohammad Anwar Hossain Khalid Rehman Hakeem Ayman EL Sabagh 《Phyton》2021,90(4):1301-1320
Globally among biotic stresses, diseases like blight, rust and blast constitute prime constraints for reducing wheat
productivity especially in Bangladesh. For sustainable productivity, the development of disease-resistant lines and
high yielding varieties is vital and necessary. This study was conducted using 122 advanced breeding lines of
wheat including 21 varieties developed by Bangladesh Wheat and Maize Research Institute (BAMRI) with aims
to identify genotypes having high yield potential and resistance to leaf blight, leaf rust and blast diseases. These
genotypes were evaluated for resistance against leaf blight and leaf rust at Dinajpur and wheat blast at Jashore
under field condition. Out of 122 genotypes tested, 20 lines were selected as resistant to leaf blight based on
the area under the diseases progress curve (AUDPC) under both irrigated timely sown (ITS) and irrigated late
sown (ILS) conditions. Forty-two genotypes were found completely free from leaf rust infection, 59 genotypes
were identified as resistant, and 13 genotypes were identified as moderately resistant to leaf rust. Eighteen genotypes were immune against wheat blast, 42 genotypes were categorized as resistant, and 26 genotypes were identified as moderately resistant to wheat blast. Molecular data revealed that the 16 genotypes showed a positive 2NS
segment among the 18 immune genotypes selected against wheat blast under field conditions. The genotypes
BAW 1322, BAW 1295, and BAW 1203 can be used as earlier maturing genotypes and the genotypes BAW
1372, BAW 1373, BAW 1297 and BAW 1364 can be used for lodging tolerant due to short plant height. The genotypes WMRI Gom 1, BAW 1349 and BAW 1350 can be selected for bold grain and the genotypes WMRI Gom 1,
BAW 1297, BAW 1377 can be used as high yielder for optimum seeding condition but genotypes BAW 1377
and BAW 1366 can be used for late sown condition. The selected resistant genotypes against specific diseases can be used in the further breeding program to develop wheat varieties having higher disease resistance and
yield potential. 相似文献
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Cendrine Godet Estelle Cateau Blandine Rammaert Marine Grosset Gwenaël Le Moal Guillaume Béraud Jean Philippe Martellosio Xavier Iriart Jacques Cadranel France Roblot 《Mycopathologia》2017,182(7-8):709-713
Invasive fungal infection is a serious complication following allogeneic hematopoietic stem cell transplantation. Pulmonary infection due to Hormographiella aspergillata is an uncommon condition associated with a high mortality rate. The susceptibility of H. aspergillata to available antifungal agents is not well established. We report for the first time a case of H. aspergillata lung infection that responded poorly to conventional treatment with liposomal amphotericin B (LAmB; 3 mg kg?1 of body weight per day) with renal damage at higher posology (5 mg kg?1 of body weight per day), but improved rapidly after addition of nebulized LAmB to intravenous LAmB (3 mg kg?1 of body weight per day). Successful treatment of our patient using nebulized LAmB would be worth evaluating in cases refractory to standard treatment or when the reference treatment may not be extended due to interaction or side effects. 相似文献