Bleaching occurs when the organisms that make up coral die and leave behind the white limestone skeleton of the reef 白化現(xiàn)象即組成珊瑚的生物于死亡后所留下、如石灰石般的骨骼。
Because selective period of chloroplast transformation was longer than that of the nuclear transformation , only the several weakly regenerated plants with spectinomynic resistantance were obtained 由于葉綠體轉(zhuǎn)化植株生長較為緩慢,篩選周期比細(xì)胞核轉(zhuǎn)化長,并且一段時間后會出現(xiàn)白化現(xiàn)象。