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IAA9-inhibited lines have simple leaves instead of wild-type compound leaves, and fruit development is triggered before fertilization, giving rise to parthenocarpy. This indicates that IAA9 is a key mediator of leaf morphogenesis and fruit set.

Dec 1, 2011 · Elevation of leaf auxin (indole-3-acetic acid; IAA) levels in intact plants has been consistently found to inhibit leaf expansion whereas excised leaf strips grow faster when treated with IAA. Here we test two hypothetical explanations for this difference in growth sensitivity to IAA by expanding leaf tissues in vivo versus in vitro.

Feb 6, 2020 · Auxin, especially indole-3-acetic acid (IAA), is a plant growth hormone that affects plant growth and development. The effect of IAA on leaf senescence is still unclear. In this study, we performed microarray analysis to investigate the role of IAA on gene expression during senescence in Arabidopsis thaliana.

Mar 7, 2017 · To test whether auxin could still initiate leaf primordia in lfs apices, a lanolin paste with 10–100 mM indoleacetic acid (IAA) was applied to its apices. IAA-treated lfs pins did not generate any leaf primordia even after 2 wk and seemed morphologically unaffected by …

Jan 1, 2024 · In this study, we investigated the function of auxin/indole-3-acetic acid (IAA) gene MdIAA24 overexpression in enhancing apple resistance to Glomerella leaf spot (GLS) caused by Colletotrichum fructicola (Cf).

Using immunocytochemistry and the IAA-driven β-glucuronidase (GUS) activity of Aux/IAA promoter::GUS constructs to detect IAA distribution, we investigated the role of polar auxin transport in vascular differentiation during leaf development in Arabidopsis.

Aug 10, 2012 · The plant hormone auxin, indole-3-acetic acid (IAA), plays important roles in plant growth and development. The signaling response to IAA is largely dependent on the local concentration of IAA, and this concentration is regulated by multiple mechanisms in plants.

Jul 3, 2014 · Auxin early response genes, such as AUX/IAA and GH3, the auxin receptor TIR1, and auxin response factor (ARF), were reported in succession related to regulating leaf angle. Overexpression of OsIAA1 increased lamina joint angle and dwarfism (Song et al. 2009).

17 hours ago · Auxin, particularly indole-3-acetic acid (IAA), is a phytohormone critical for plant growth, development, and response to environmental stresses like shade avoidance syndrome and thermomorphogenesis. Despite its importance, there is no existing method that allows for convenient and direct detection of IAA in various plant species. Here, we introduce a near-infrared fluorescent nanosensor that ...