004020000a22001450004500020001500000060000800015082001600023100001600039100001400055245004600069260005000115260000900165300000800174650007400182 a4431702148 a100 a571.742 SAK aSakukrai, A aYokota, T aBrassinoteroids: Steroidal plant hormones aNew York, Springer - verlag Berlin Heidelberg c1999 a253 aBrassinosteroids/ Biosynthesis/ Natural occurance of brassinosteroids