Effects of Indoleacetic Acid on Growth Without Mitosis &amp; on Mitotic Activity in Absence of Growth by Expansion

Haber, Alan H.

doi:10.1104/pp.37.1.18

Cited by 29 publications

(10 citation statements)

References 25 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, auxin has long been known to regulate growth in a more direct fashion; indeed, the molecule's name is derived from the greek "auxein," i.e., to grow, as the compound was first identified as a potent regulator of plant growth responses. Auxin can modulate both cell division and expansion, and physiological evidence suggests that the proliferation or expansion responses to auxin can be uncoupled (Haber 1962;Bhalerao and Bennett 2003). Such more direct effects of auxin on cellular growth in the leaf are mediated by two distinct signaling pathways: first, a well-characterized TRANS-PORT INHIBITOR RESPONSE1 (TIR1)-AUX-IN/INDOLE-3-ACETIC ACID (AUX/IAA)-ARF dependent pathway (Dharmasiri et al 2005;Wilmoth et al 2005;Leyser 2006;Schruff et al 2006); second, a much less well understood pathway involving the ER-localized protein AUXIN BINDING PROTEIN1 (ABP1), which can act as an auxin receptor in parallel to TIRs (Chen et al 2001a;Chen et al 2001b;Braun et al 2008).…”

Section: Leaf Axis Formationmentioning

confidence: 99%

Control of Leaf and Vein Development by Auxin

Scarpella¹,

Barkoulas²,

Tsiantis³

2009

Cold Spring Harbor Perspectives in Biology

225

210

View full text Add to dashboard Cite

Leaves are the main photosynthetic organs of vascular plants and show considerable diversity in their geometries, ranging from simple spoonlike forms to complex shapes with individual leaflets, as in compound leaves. Leaf vascular tissues, which act as conduits of both nutrients and signaling information, are organized in networks of different architectures that usually mirror the surrounding leaf shape. Understanding the processes that endow leaves and vein networks with ordered and closely aligned shapes has captured the attention of biologists and mathematicians since antiquity. Recent work has suggested that the growth regulator auxin has a key role in both initiation and elaboration of final morphology of both leaves and vascular networks. A key feature of auxin action is the existence of feedback loops through which auxin regulates its own transport. These feedbacks may facilitate the iterative generation of basic modules that underlies morphogenesis of both leaves and vasculature.

show abstract

Section: Leaf Axis Formationmentioning

confidence: 99%

Control of Leaf and Vein Development by Auxin

Scarpella¹,

Barkoulas²,

Tsiantis³

2009

Cold Spring Harbor Perspectives in Biology

225

210

View full text Add to dashboard Cite

show abstract

“…Cell division, cell expansion and the mode of action of growth retardants and GA -There are several accounts in the literature of the experimental separation of cell division and expansion (see Sachs, 1961;Haber, 1962;Adamson, 19(2), yet our results clearly show that there is a close relationship between the 2 processes in intact stem tissues. Indeed, in chrysanthemum shoots the zones of the greatest rates of elongation and division coincide.…”

mentioning

confidence: 46%

Comparative Cytohistological Studies on Inhibition and Promotion of Stem Growth in Chrysanthemum Morifolium

Sachs

Kofranek

1963

American J of Botany

View full text Add to dashboard Cite

Sachs, R. M. (U. California, Davis), and A. M. Kopranek. Comparative cytohistological studies on inhibition and promotion of stem growth in Chrysanthemum morifolium. Amer. Jour. Bot. 50(8): 772‐779. Illus. 1963.—The present study with Amo, CCC, and Phosfon,3 3 substances which inhibit stem elongation, shows that all inhibit subapical cell expansion and division in Chrysanthemum morifolium var. ‘Indianapolis Yellow.‘ Furthermore, GA,3 in preventing the inhibition of stem elongation, maintains subapical activity at normal or greater than normal levels. For comparative purposes concentrations of the retardants and GA have been selected which completely prevent or promote the maximum rate of stem elongation. Phosfon causes complete inhibition of root growth and almost completely prevents dry matter accumulation in the tops. However, GA does not prevent such deleterious effects. Thus, GA and the growth retardants are mutually antagonistic only with respect to stem elongation and not to other aspects of growth. Furthermore, none of the retardants inhibits transverse stem growth; on the contrary transverse cell expansion and division in the subapical tissues are stimulated by the retardants, and as a result the stems of such plants are thicker than normal. GA not only prevents the thickening effect of the retardants, but, at the doses applied, GA‐treated stems are considerably thinner than those of the controls, having fewer and smaller cells across the pith, cortical, and vascular tissues. Apparently, then, there is a relationship between longitudinal and transverse growth in the subapical tissues such that if one is promoted, the other is inhibited.

show abstract

“…As noted by HOLM and ABELES (1968) some factor supplied by the roots may be implicated. If cytokinins are involved in the 2,4-D response, as supposed by HABER (1962), VAN OVERBEEK (1964 a) and KEy et al (1966) then the cytokinin exudation from bleeding roots (KENDE 1965) suggests one reason why roots may be needed.…”

Section: Abnormal Rna Metabolismmentioning

confidence: 94%

Residues of Pesticides and Other Foreign Chemicals in Foods and Feeds / Rückstände von Pesticiden und anderen Fremdstoffen in Nahrungs- und Futtermitteln

1969

View full text Add to dashboard Cite

Effects of Indoleacetic Acid on Growth Without Mitosis & on Mitotic Activity in Absence of Growth by Expansion

Cited by 29 publications

References 25 publications

Control of Leaf and Vein Development by Auxin

Control of Leaf and Vein Development by Auxin

Comparative Cytohistological Studies on Inhibition and Promotion of Stem Growth in Chrysanthemum Morifolium

Residues of Pesticides and Other Foreign Chemicals in Foods and Feeds / Rückstände von Pesticiden und anderen Fremdstoffen in Nahrungs- und Futtermitteln

Contact Info

Product

Resources

About