University of Tasmania
Browse

File(s) under permanent embargo

Arabidopsis annexin1 mediates the radical-activated plasma membrane Ca2+- and K+-permeable conductance in root cells

journal contribution
posted on 2023-05-17, 11:38 authored by Laohavisit, A, Shang, Z, Rubio, L, Tracey Cuin, Very, A-A, Wang, A, Mortimer, JC, Macpherson, N, Coxon, KM, Battey, NH, Brownlee, C, Park, OK, Sentenac, H, Sergey ShabalaSergey Shabala, Webb, AAR, Davies, JM
The genus Asparagus is unusual in producing axillary, determinate organs called cladodes, which may take on either a flattened or cylindrical form. Here, we investigated the evolution of cladodes to elucidate the mechanisms at play in the diversification of shoot morphology. Our observations of Asparagus asparagoides, which has leaf-like cladodes, showed that its cladodes are anatomically and developmentally similar to leaves but differ in the adaxial/abaxial polarity of the vasculature. In addition to the expression of an ortholog of KNAT1, orthologous genes that are normally expressed in leaves, ASYMMETRIC LEAVES1 and HD-ZIPIII, were found to be expressed in cladode primordia in a leaf-like manner. The cylindrical cladodes of Asparagus officinalis showed largely similar expression patterns but showed evidence of being genetically abaxialized. These results provide evidence that cladodes are modified axillary shoots, suggest that the co-option of preexisting gene networks involved in leaf development transferred the leaf-like form to axillary shoots, and imply that altered expression of leaf polarity genes led to the evolution of cylindrical cladodes in the A. officinalis clade

History

Publication title

Plant Cell

Volume

24

Issue

4

Pagination

1522-1533

ISSN

1040-4651

Department/School

Tasmanian Institute of Agriculture (TIA)

Publisher

Amer Soc Plant Biologists

Place of publication

15501 Monona Drive, Rockville, USA, Md, 20855

Rights statement

Copyright 2012 American Society of Plant Biologists

Repository Status

  • Restricted

Socio-economic Objectives

Horticultural crops not elsewhere classified

Usage metrics

    University Of Tasmania

    Exports

    RefWorks
    BibTeX
    Ref. manager
    Endnote
    DataCite
    NLM
    DC