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ZmFKBP20-1 improves the drought and salt tolerance of transformed Arabidopsis
Yanli Yu,Yanjiao Li,Fengjuan Jia,Meng Zhao,Wencai Li,Qi Sun,Nana Li,Wenlan Li,Zhaodong Meng 한국식물학회 2017 Journal of Plant Biology Vol.60 No.6
FK506-binding proteins (FKBPs), which belongto the peptidyl-prolyl cis/trans isomerase superfamily, areinvolved in plant response to abiotic stresses. A number ofFKBP family genes have been isolated in plants, but littlehas been reported of FKBP genes in maize. In this study, adrought-induced FKBP gene, ZmFKBP20-1, was isolated frommaize and was characterized for its role in stress responsesusing gene expression, protein subcellular localization,transformation in Arabidopsis, expression patterns of thestress-responsive genes, and physiological parameter analysis. During drought and salt stresses, ZmFKBP20-1 transgenicArabidopsis plants exhibited enhanced tolerance, which wasconcomitant with the altered expression of stress/ABAresponsivegenes, such as COR15a, COR47, ERD10, RD22,KIN1, ABI1, and ABI2. The resistance characteristics ofZmFKBP20-1 overexpression were associated with a significantincrease in survival rate. These results suggested thatZmFKBP20-1 plays a positive role in drought and salt stressresponses in Arabidopsis and provided new insights into themechanisms of FKBP in response to abiotic stresses inplants.
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Dongli Ma,Juntao Li,Chengfei Huang,Fengjuan Yang,Yi Wu,Ling Liu,Wei Jiang,Zhicheng Jia,Peijun Zhang,Xuezhen Liu,Shuai Zhang 아세아·태평양축산학회 2019 Animal Bioscience Vol.32 No.10
Objective: The research was conducted to determine the digestible (DE) and metabolizable energy (ME) contents as well as the apparent total tract digestibility (ATTD) of nutrients in corn, waxy corn and steam-flaked corn fed to growing pigs. Methods: Eighteen growing pigs with initial body weight of 15.42±1.41 kg were randomly allotted to three diets including a corn diet, a waxy corn diet and a steam-flaked corn diet in a completely randomized design. Each treatment contained six replicates. The experiment lasted for 12 days, which comprised 7-d adaptation to diets followed by a 5-d total collection of feces and urine. The energy contents and the nutrient digestibility in three ingredients were calculated using direct method. Results: Compared to normal corn, both the amylose and dietary fiber contents in waxy corn were numerically lower, but the starch gelatinization degree was numerically greater. Moreover, the DE and ME contents as well as the ATTD of neutral detergent fiber and acid detergent fiber (ADF) in waxy corn were significantly greater (p<0.05) than those in normal corn when fed to growing pigs. Furthermore, the steam-flaked corn had greater (p<0.05) DE and ME contents, and ATTD of ether extract and ADF compared to normal corn. Conclusion: Both variety and processing procedure have influence on chemical compositions, energy contents and nutrient digestibility of corn. The waxy corn and steam-flaked corn had greater degree of starch gelatinization and DE and ME contents compared to normal corn when fed to growing pigs.
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