1.目前有关植物中信号肽的研究主要基于以下5种: 番茄 systemin PSK ENOD40cLV3SCR 18 aa 10-13a72-75aa、53-55aa 2.最近分离到另外3种活性信号肽 RALF: rapid alkal inization factor 5 kd Tobacco systemin: Tob sys I, Tob sys II
1. 目前有关植物中信号肽的研究主要基于以下5种： 番茄systemin PSK ENOD40 CLV3 SCR 18 aa 10-13 aa 72-75 aa 53-55 aa 2. 最近分离到另外3种活性信号肽： RALF: rapid alkalinization factor, 5 kd; Tobacco systemin: Tob sys I, Tob sys II
3.功能: 1) tomato systemin:由食草动物损伤后引起的系统 损伤反应( a system ic wounding response) °在悬浮培养细胞中可以激活促细胞分裂蛋白激酶 Lmitogen-activated protein( MAp)kinase] ●并诱导培养基地碱化( alkal inization) ●诱导蛋白酶抑制蛋白编码基因的表达( induce expression of prote inase-inhibitor prote in-encod ing genes)
1）tomato systemin: 由食草动物损伤后引起的系统 损伤反应( a systemic wounding response) • 在悬浮培养细胞中可以激活促细胞分裂蛋白激酶 [mitogen-activated protein(MAP) kinase] • 并诱导培养基地碱化(alkalinization) • 诱导蛋白酶抑制蛋白编码基因的表达(induce expression of proteinase-inhibitor protein-encoding genes) 3. 功能：
2) tobacco systemin Tob I and Tob I 激活 maP kinase,但不诱导蛋白酶抑制蛋白编码 基因的表达 3)RALF (rapid alkal inizaton factor) °激活 maP kinase,但不诱导蛋白酶抑制蛋白编码 基因的表达; 快速引起 med ium碱化
2）tobacco systemin Tob I and Tob II: 激活 MAP kinase，但不诱导蛋白酶抑制蛋白编码 基因的表达 3）RALF (rapid alkalinizaton factor): • 激活 MAP kinase，但不诱导蛋白酶抑制蛋白编码 基因的表达; • 快速引起 medium 碱化
4.信号调控网络 From the followings support the idea that peptide and nonpeptide hormone-activated signaling cascades are linked in plants as they are in animals: ●植物生长素类似5一羟色胺,乙烯类似一氧化碳, 油菜素类固醇是类固醇,茉莉酮酸与前列腺素相关; Systemin-induced wound response is regulated through the octadecanoid pathway involving jasmonic acid
From the followings support the idea that peptide and nonpeptide hormone-activated signaling cascades are linked in plants as they are in animals: • 植物生长素类似5－羟色胺，乙烯类似一氧化碳， 油菜素类固醇是类固醇，茉莉酮酸与前列腺素相关； • Systemin-induced wound response is regulated through the octadecanoid pathway, involving jasmonic acid; 4. 信号调控网络
PSK-induced cell proliferation requires the hormones auxin or cytokinin; o Some of the developmental distortions in roots induced on addition of ralf are reminiscent of impaired nonpeptide hormone-controlled processes 因此,揭开两种信号 cascades之间关系,将是非常 有趣的事
• PSK-induced cell proliferation requires the hormones auxin or cytokinin; • Some of the developmental distortions in roots induced on addition of RALF are reminiscent of impaired nonpeptide hormone-controlled processes. 因此，揭开两种信号cascades之间关系，将是非常 有趣的事