Ann. Rev. PP¿ 9¾ 33939 yrigh yAnleven½Allrighsreserve CALCIUM AND PLANT DEVELOPMENT Peter K. Hepler and Randy O. Wayne Department of Botany, University of Massachusetts, Amherst, Massachusetts 003 CONTENTS INTROUCTION .. ... ..... ........... .. ...... . .... .. . .. ............... ...... .. . 397 G EN ER A L  MEC HANIS MS OF R EG UATION IN VOLVING A S ECOND MESSENGER.. .. ... ...... .... . .. . ....... .. .. .. . . ..... .... . ... . ........... .... ........ . . .. .  398 CELLLA METABOLI S M OF C a2+ .. .. . . . . .... .. . .... . .. . . ... . ... . ... .. . . .. ... .. ... . . . ..... ..  401 C 2+ C H E MIS R  .. ... . . . . .. . . . . . .  ............ .................. .................. ........». ........  Ca\+-B IND ING PROTEINS . . .... .. . ... . ..... .. . .. .. ... ...... .... . .. . ... . .... . .. . . . . .. ... . .. .... . ..  403 TE FITNESS OFC2+ . .. . . .. . . . .. . .. ................ .............. 404 Ca2+-MEDIATED PROC ESS ES . ..... . . . ... . .. .. ..... . .. . .... ......... .. .. . .. . .. . . . .... .. .. .. . .. ..  404 Polar id G rowth . . . .. . .. . . . . . . . . . . . . . . . . . . .. . .. . . . . . . . . . . ... ..... . . . . . . . . . ...... . . . . . . . . .. . . ..... 405 M ito sisan dCyto in esis.. . . .... . .. . .... .. . . .... . . ... .. .... . ....... . ... . . . . .. ... ... . . . . ...... . . ...  407 Cytoplasm i ream in g . . ... . . . ... . . . .. . . . . ... . . .... . . . .. . . . .... . .. .. .... . . . .... . . ... .... . .. . ... . .  409 STI MULUS-RESPONS ECO UPLING . . . . . .. . . . .. . .. . . ... ...... . .. . .. ... ... .. ... .... .. . . . ... . ....  412 ight . ..... .. . ... . ... . .. ... . .. . . ... . . ..... . . . .. .. . . . .... . .. ... ... .. ... ..... . . . . . .. . . .. .. . .. .. .. .. . .. ..  412 ¼ . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . .. . . . . . . . . . . . . . . ... . . . . . . . . . .. . . . . . . . . . . . . . . .... . . . .. . . . .. . 416 Cyto in in .. ... . . ... ...... . ... .. . .... . ... .. ... . .. . ... .. .. . ... .... . ... . .. .. .. . . ... . .... . ... . . . . . .. . ...  419 Gibberlin . . . .. . ... . . .. .. ... . . ... ... . . .. . . .. ... .. . .. . .. .... ...... . .. . ..... . . . .. .. ... ... . . . .. ... .. . .  421 Ain . . .. . . .... .. . . . . . . . . ... ... . ... . . . .. . .. ... . . .. . .... .. .. ..... . . . ... . . ... ..... . ... ... .... . .... . .. . .  423 AN EVALUATION OF Ca2+ IN PLANT D EVEOPMENT . . . ... '" ......... 425 "Our knowlege about C a+ is tillincreasing the more we lea aout C+ , te more imressedweareby awidevarietyofte modeofactinofC a+. It is alostlike lfeiself." S s Ebas (a) INTRODUCTION A revolution is occurring in our thinking about the physiology and development of plants as we realize the importance of calcium ions (Ca 2 + ) in mediating many diferent processes. The function of Ca 2 + as a "second messenger" in 3 0066-4294/85/0601-0397$02.00 Annu. Rev. Plant. Physiol. 1985.36:397-439. Downloaded from www.annualreviews.org Access provided by Cornell University on 11/12/15. For personal use only.