Results 171 to 180 of about 43,955 (204)
Some of the next articles are maybe not open access.
Organization of the root apical meristem in angiosperms
American Journal of Botany, 2008Although flowers, leaves, and stems of the angiosperms have understandably received more attention than roots, the growing root tips, or root apical meristems (RAMs), are organs that could provide insight into angiosperm evolution. We studied RAM organization across a broad spectrum of angiosperms (45 orders and 132 families of basal angiosperms ...
Charles, Heimsch, James L, Seago
openaire +2 more sources
REGULATION OF ROOT APICAL MERISTEM DEVELOPMENT
Annual Review of Cell and Developmental Biology, 2005The establishment of the Angiosperm root apical meristem is dependent on the specification of a stem cell niche and the subsequent development of the quiescent center at the presumptive root pole. Distribution of auxin and the establishment of auxin maxima are early formative steps in niche specification that depend on the expression and distribution ...
Keni, Jiang, Lewis J, Feldman
openaire +2 more sources
Determination of cell fate in apical meristems
Current Opinion in Plant Biology, 2004Although roots and shoots exhibit profound differences in their pattern of organogenesis, both apices share the capacity for indeterminate growth. Ongoing molecular and genetic analyses have revealed relatively little overlap between the genes that regulate organogenesis in the root and shoot apices.
openaire +2 more sources
Shoot Apical Meristem Form and Function
2010The shoot apical meristem (SAM) generates above-ground aerial organs throughout the lifespan of higher plants. In order to fulfill this function, the meristem must maintain a balance between the self-renewal of a reservoir of central stem cells and organ initiation from peripheral cells.
Chan Man, Ha +2 more
openaire +2 more sources
Apical Meristems of Ephedra foliata
Botanical Gazette, 19611. During development of the root apex of Ephedra foliata Boiss. the rows of cortical cells in the root proper are continuous with the rows in the periphery of the root cap. The columella of the cap does not contribute in any way to the peripheral region from which it can be distinguished cytohistologically. In the columella cell divisions occur in rib-
B. D. Deshpande, Prabha Bhatnagar
openaire +1 more source
THE DEVELOPMENT AND DYNAMICS OF THE ROOT APICAL MERISTEM
American Journal of Botany, 1984During the past ten years our concepts of the root apex and how it functions have expanded considerably. Through the use of several unique root tissue systems investigators have characterized the populations of cells which comprise the apex and have refined our views of the ways in which these populations interact to regulate aspects of root ...
openaire +2 more sources
Shoot and Root Apical Meristems
2017The structure and organization of the shoot and root apical meristems is presented. Their functional zones and mechanism of functioning are described. The shoot apical meristem is presented as a dynamic structure that changes during leaf and stem formation.
Mirjana Pavlović, Ksenija Radotić
openaire +1 more source
Cellular basis of shoot apical meristem development
2001Shoot apical meristems are composed of proliferating, embryonic type cells, that generate tissues and organs throughout the life of the plant. This review covers the cell biology of the higher plant shoot apical meristem (SAM). The first section describes the molecular basis of plant cell growth and division.
J, Traas, J H, Doonan
openaire +2 more sources