Plant Tropisms
Rashotte A, DeLong A, and Muday G. 2001. Genetic and chemical reductions in protein phos- phatase activity alter auxin transport ...
Yester JW, Kimbrough JM, Salinas-Mondragon R, Masson PH, Brown CS, and Sederoff HW. Regulation of transcription in roots of Ara ...
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3 Auxin Transport and the Integration of Gravitropic Growth Gloria K. Muday* and Abidur Rahman 47 3.1 Introduction to Auxins Aux ...
ution of auxin also appears to be responsible for the curvature response to lateral light stimulation (phototropism; see Chapter ...
(Katekar and Geissler 1980; Muday and Haworth 1994; Rashotte et al. 2000). Recently, synthetic and naturally occurring inhibitor ...
50 Figure 3.2(also see Color Section). Expression of auxin-responsive reporters is elevated on the lower side of gravity-stimula ...
3.3 Approaches to identify proteins that mediate IAA efflux Biochemical and genetic approaches have identified a number of prote ...
pressed in roots and is localized asymmetrically in the plasma membrane, consistent with a role in mediating basipetal IAA trans ...
plex formation (as reviewed in Geisler and Murphy 2006). The altered localization of PIN1 in the mdr1/pgp19mutant is consistent ...
root branching and root hair formation (Maher and Martindale 1980; Marchant et al. 2002; Rahman et al. 2002). Consistent with a ...
to the /ß hydrolyase super-family and the protein localizes to the ER membrane, consis- tent with the accumulation of AUX1 prot ...
of IAA efflux proteins. Efflux carrier activity and/or synthesis may be regulated by phos- phorylation and by regulatory molecul ...
that the PIN3 protein may function in this way (Friml et al. 2002; see also Chapter 2). PIN3 is expressed in root columella cell ...
the root (Paciorek et al. 2005). Taken together, these results suggest a mechanism by which IAA may reinforce its own changing p ...
Addition of auxin prevents the loss of EIR1/PIN2 protein and PIN2-GFP fusions (Abas et al. 2006). Similarly, in gravity-stimulat ...
Hypocotyls of rcn1also exhibit altered gravity response and auxin transport (Muday et al. 2006). As in the root tip, RCN1-contro ...
which mutant phenotypes include altered gravity response, suggest other targets of phos- phorylation beyond the PIN proteins. 3. ...
62 Figure 3.4. Flavonoid accumulation spikes during gravitropic stimulation in wild-type Arabidopsis. A. The relative flavonoid ...
in Chapter 2, biochemical and cell biological approaches have identified several signal- ing molecules that are produced in resp ...
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