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Dietary xanthophyll improved growth,antioxidant,pigmentation and meat quality in the southern catfish(Silurus soldatovi meridionalis Chen)

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Animal Nutrition 2023年第2期13卷 101-115页

作者： Chaoqun He Haoyu Geng Yawen Qin Peng Yang Wenqiang Wang Kangsen Mai Fei Song Institute of Modern Aquaculture Science and Engineering(IMASE) Guangzhou Key Laboratory of Subtropical Biodiversity and BiomonitoringGuangdong Provincial Key Laboratory for Healthy and Safe AquacultureCollege of Life ScienceSouth China Normal UniversityGuangzhou510631China Southern Marine Science and Engineering Guangdong Laboratory(Zhuhai) Zhuhai519000China

xanthophyll has multiple physiological functions to improve the quality of farmed *** present study aimed to investigate the effects of xanthophyll on the growth performance,antioxidation,immunity,pigmentation and meat quality of southern catfish(Silurus soldatovi meridionalis Chen).Juvenile southern catfish(18.35±0.04 g)were randomly allocated into 24 cages(30 juveniles per cage),and fed diets with different dietary xanthophyll levels(at 14,42,80,108,126 and 152 mg/kg,dry matter of diet)twice daily for 8 *** indicated that the diet with 80 mg/kg xanthophyll induced a higher specific growth rate(SGR),feed efficiency ratio and protein productive ***,the 80 mg/kg xanthophyll diet also increased complement 3,immunoglobulin M(IgM)and lysozyme content more than the other *** mRNA expression level of inflammation-related genes and antioxidant enzyme activities further confirmed the effects of 80 mg/kg dietary xanthophyll on improving immune *** present study also found that the 126 mg/kg xanthophyll diet significantly enhanced the content of total carotenoids and xanthophyll,hydroxyproline,collagen and amino acid in *** diet with 126 mg/kg xanthophylls also induced lower drip loss,thawing loss,centrifugal loss,cooking loss and higher muscle adhesiveness,cohesiveness,springiness,gumminess and chewiness than the other *** conclusion,quadratic regression model analysis based on SGR and IgM revealed that the optimum xanthophyll level in the diet was 86.78 and 84.63 mg/kg,***,broken line regression analysis based on xanthophyll content in dorsal skin and chewiness in muscle demonstrated that the optimal xanthophyll level was between 89.73 and 108.66 mg/kg in the diet of southern catfish(*** meridionalis Chen).

关键词： xanthophyll Growth performance Antioxidant capacity Fish quality Southern catfish(Silurus soldatovi meridionalis Chen)

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Relationships between D1 protein, xanthophyll cycle and photodamage-resistant capacity in rice (Orysa sativa L.)

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Chinese Science Bulletin 2000年第17期45卷 1569-1575页

作者： Jl Benhua & JIAO Demao1. Institute of Agrobiological Genetics and Physiology, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China 2. Department of Biology , Nantong Teachers College, Nantong 226007, China Correspondence should be addressed to Jiao Demao Institute of Agrobiological Genetics and Physiology Jiangsu Academy of Agricultural Sciences Nanjing China Department of Biology Nantong Teachers College Nantong China

Relationships between D1 protein, xanthophyll cycle and subspecific difference of photodamage-resistant capacity have been studied in O. japonica rice varieties 02428 and 029 (photoinhibition-tolerance) and O. indica rice varieties 3037 and Palghar (photoinhibition-sensitivity) and their reciprocal cross F, hybrids after photoinhibitory treatment. It was shown that PS II photochemical efficiency (Fv /Fm) decreased, and xanthophyll cycle from violaxanthin (V), via anaxanthin (A), to zeaxanthin (Z) was enhanced and non-photochemical quenching (g/v) increased accordingly in SM-pretreated leaves of rice when the synthesis of D1 protein was inhibited, and that there was a decrease in qN and, as a result, more loss of D1 protein and a big decrease in Fv/Fm in DTT-pretreated leaves when xanthophyll cycle was inhibited. O. japonica subspecies had a higher maintaining capacity of D1 protein and a decrease of Fv /Fm in a more narrow range, and exhibited more resistance against photodamage, as compared with O.

关键词： D1 protein non-photochemical quenching photoinhibition of photosynthesis rice xanthophyll cycle.

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Difference in response of chlorophyll fluorescence parameters to strong light between wheat and soybean leaves

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Chinese Science Bulletin 1997年第8期42卷 684-689页

作者： Hong, SS Xu, DQ Shanghai Institute of Plant Physiology Chinese Academy of Sciences Shanghai China

UPPER leaves of higher plants are often exposed to strong sunlight around noon on clear days,

关键词： chlorophyll fluorescence xanthophyll cycle reversible inactivation of PS Ⅱ reaction centers wheat soybean.

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Responses of Transgenic Tobacco Plants with Increased Proline Content to Drought and/or Heat Stress

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American Journal of Plant Sciences 2011年第3期2卷 318-324页

作者： Jana Pospisilova Daniel Haisel Radomira Vankova 不详

Transgenic tobacco plants (M51-1) constitutively over-expressing a modified gene for the proline biosynthetic enzyme △2-pyrroline-5-carboxylate synthetase (P5CSF129A) and the corresponding wild-type plants (WT) were compared during drought or heat stress and under combination of both stresses. The proline content in M51-1 was several times higher than in WT plants. Under optimal conditions, the transpiration rate and stomatal conductance of M51-1 plants were lower than those in WT plants. The differences in net photosynthetic rate were not significant and water use efficiency and contents of chlorophyll and xanthophyll cycle pigments were higher in M51-1 than in WT plants. Drought induced by cessation of watering for 7 d resulted in decrease of all gas exchange parameters and chlorophyll content, but in an increase of the content of xanthophyll cycle pigments and degree of their de-epoxidation. After application of heat stress (40°C/60 min) to control or water-stressed plants the gas exchange parameters decreased considerably. Short-term heat stress alone, however, did not affect pigment contents. The responses of M51-1 and WT plants to the tested stresses did not differ significantly. Therefore, a decisive contribution of elevated proline content to drought or heat stress tolerance of tobacco was not proved.

关键词： Carotenoids Chlorophyll Net Photosynthetic Rate Stomatal Conductance Transpiration Rate xanthophyll Cycle Pigments

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