Comparison of leaf plastochron index and allometric analyses of tooth development in Arabidopsis thaliana

被引:19
作者
Groot, EP [1 ]
Meicenheimer, RD [1 ]
机构
[1] Miami Univ, Dept Bot, Oxford, OH 45056 USA
关键词
leaf plastochron index; allometric analysis; tooth development; relative rates of leaf growth; Arabidopsis thaliana; Serrate; Columbia-1;
D O I
10.1007/s003440000008
中图分类号
Q94 [植物学];
学科分类号
071001 ;
摘要
Two methods of analyses were used to investigate tooth development in serrate (se) mutant and wildtype Columbia-1 (Col-1) Arabidopsis thaliana leaves. There were almost twice as many teeth with deeper sinuses and two orders of toothing on the margins of serrate compared with Columbia-1 leaves. The main objective of this study was to test three hypotheses relative to the source of polymorphism in tooth development: (i) Teeth share similar growth rates and initial sizes, but the deeper teeth are initiated earlier in leaf development. (ii) Teeth share similar timing of initiation and growth rates, but the deeper teeth have a larger initial size. (iii) Teeth share similar timing of initiation and initial sizes, but the deeper teeth have a faster growth rate. Leaf plastochron index (LPI) was used as the time variable for leaf development. Results showed teeth in se were initiated at -27 LPI, 15 plastochrons earlier than those of Col-1. Serrate leaf expansion was biphasic, with the early phase expanding at half the relative plastochron rate of the later phase, which equaled the constant relative expansion rate of Col-1 leaves. Allometric analyses of tooth development obscured the interactions between time of tooth and leaf initiation and the early phase of leaf expansion characteristic of serrate leaves and teeth. Timing of developmental events that allometric analysis obscured can be readily detected with the LPI as a developmental index.
引用
收藏
页码:77 / 89
页数:13
相关论文
共 26 条
  • [1] Causton DR, 1981, BIOMETRY PLANT GROWT
  • [2] KNAT1 induces lobed leaves with ectopic meristems when overexpressed in Arabidopsis
    Chuck, G
    Lincoln, C
    Hake, S
    [J]. PLANT CELL, 1996, 8 (08) : 1277 - 1289
  • [3] Dolan L., 1991, DEVELOPMENT S, V1, P39
  • [4] ERICKSON RO, 1957, AM J BOT, V44, P209
  • [5] FOSTER AS, 1936, BOT REV, V2, P1936
  • [6] GROOT EP, IN PRESS INT J PLANT
  • [7] The expression of genes for leaf shape in Gossypium hirsutum L and Gossypium arboreum L I The expression of genes for leaf shape in Gossypium hirsutum L
    Hammond, D
    [J]. AMERICAN JOURNAL OF BOTANY, 1941, 28 (02) : 124 - 138
  • [8] HAMMOND D, 1941, AM J BOT, V23, P138
  • [9] The making of a compound leaf: Genetic manipulation of leaf architecture in tomato
    Hareven, D
    Gutfinger, T
    Parnis, A
    Eshed, Y
    Lifschitz, E
    [J]. CELL, 1996, 84 (05) : 735 - 744
  • [10] HICKEY LJ, 1973, AM J BOT, V60, P17, DOI 10.2307/2441319