Access

You are not currently logged in.

Access JSTOR through your library or other institution:

login

Log in through your institution.

Heteroblasty in Arabidopsis thaliana (L.) Heynh

Hirokazu Tsukaya, Keiko Shoda, Gyung-Tae Kim and Hirofumi Uchimiya
Planta
Vol. 210, No. 4 (March 2000), pp. 536-542
Published by: Springer
Stable URL: http://www.jstor.org/stable/23385960
Page Count: 7
  • More info
  • Cite this Item
Heteroblasty in Arabidopsis thaliana (L.) Heynh
Preview not available

Abstract

Heteroblasty in Arabidopsis thaliana was analyzed in a variety of plants with mutations in leaf morphology using a tissue-specific β-glucuronidase gene marker. Some mutants exhibited their mutant phenotypes specifically in foliage leaves. The phenotypes associated with the foliage-leaf-specific mutations were also found to be induced ectopically in cotyledons in the presence of the lec1 mutation. Moreover, the features of an emf1 lec1 double mutant showed that cotyledons can be partially converted into carpelloids. When heteroblastic traits were examined in foliage leaves in the presence of certain mutations or natural deviations by histochemical analysis of the expression of the tissue-specific marker gene, it was found that ectopic expression of the developmental program for the first foliage leaves in lec1 cotyledons seemed to affect the heteroblastic features of the first set of foliage leaves, while foliage leaves beyond the third position appeared normal. Similarly, in wild-type plants, discrepancies in heteroblastic features, relative to standard features, of foliage leaves at early positions seemed to be eliminated in foliage leaves at later positions. These results suggest that heteroblasty in foliage leaves might be affected in part by the heteroblastic stage of the preceding foliage leaves but is finally controlled autonomously at each leaf position.

Page Thumbnails

  • Thumbnail: Page 
[536]
    [536]
  • Thumbnail: Page 
537
    537
  • Thumbnail: Page 
538
    538
  • Thumbnail: Page 
539
    539
  • Thumbnail: Page 
540
    540
  • Thumbnail: Page 
541
    541
  • Thumbnail: Page 
542
    542