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China clones heat-tolerant gene from African rice strainCientíficos chinos clonan los genes de tolerancia al calor de cepas de arroz africanas
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China clones heat-tolerant gene from African rice strainCientíficos chinos clonan los genes de tolerancia al calor de cepas de arroz africanas
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Publish time:
10
th
June, 2015
Source:
Shanghai, China
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China clones heat-tolerant gene from African rice strainCientíficos chinos clonan los genes de tolerancia al calor de cepas de arroz africanasChina clones heat-tolerant gene from African rice strainCientíficos chinos clonan los genes de tolerancia al calor de cepas de arroz africanas" title="Share this link on Facebook">Shanghai, ChinaMay 21, 2015Source: Xinhua via Forum on China-Africa CooperationChinese scientists have succeeded in isolating and cloning heat-tolerant genes from African rice strains, which could help develop rice varieties that can withstand climate change brought by global warming.Lin Hongxuan, an academician with the Institute of Plant Physiology and Ecology under the Chinese Academy of Sciences, said on Thursday that high heat, normally temperatures above 35 degrees Celsius, reduces rice production.Heat stress can strain rice proteins and cause the plant to wither. Lin's team found that a gene isolated from the African rice strain can automatically activate when heat strikes. It works to remove toxic proteins whose accumulation leads to the plant's death.Lin said his team has conducted field studies growing Asian rice strains with the transplanted gene that show the gene's dominant traits enable the plant to withstand high temperatures.He said the cloned gene can be transplanted to develop new varieties of rice, wheat and cruciferous vegetables such as Chinese cabbage.Científicos chinos clonan los genes de tolerancia al calor de cepas de arroz africanasSource: Fundacion AntamaUn equipo de científicos de la Academia china de Ciencias ha aislado y clonado los genes de tolerancia al calor de cepas de arroz africanas, logro que permitirá el desarrollo de nuevas variedades de arroz que puedan resistir con éxito los efectos del calentamiento global. Según explica el líder de la investigación, Lin Hongxuan, la producción de las plantas del arroz disminuye notablemente cuando las temperaturas superan los 35 grados, algo que podrá ser evitado con este descubrimiento.El estrés por el calor destruye las proteínas del arroz, haciendo que la planta se marchite y por tanto que deje de ser productiva. Las variedades de arroz africano cuentan con un gen que se activa en situaciones de estrés térmico, deshaciéndose de las proteínas tóxicas que pueden causar la muerte de la planta del arroz.Los investigadores han realizado ensayos de campo con variedades de arroz asiáticas a las que se ha introducido el gen capaz de adaptarse al estrés térmico. Los resultados mostraron que los rasgos dominantes del nuevo gen permitía a las plantas soportar el estrés causado por las altas temperaturas. Lin Hongxuan resalta que el gen clonado puede también ser usado para desarrollar variedades de trigo y verduras crucíferas tolerantes al calor.Published: June 10, 2015The news item on this page is copyright by the organization where it originatedFair use notice
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