MtLAX2, a Functional Homologue of the Arabidopsis Auxin Influx Transporter AUX1, Is Required for Nodule Organogenesis1[CC-BY]
نویسندگان
چکیده
Department of Cell and Developmental Biology, John Innes Centre, Norwich Research Park, Norwich, NR4 7UH, United Kingdom (S.R., F.R., J.L., C.-W.L., J.S., D.C., C.B., G.O., J.D.M.); Plant Biology Division, Samuel Roberts Noble Foundation, 2510 Sam Noble Parkway, Ardmore, Oklahoma 73401 (S.R., X.C., J.W.); Department of Molecular Microbiology, John Innes Centre, Norwich Research Park, Norwich, NR4 7UH, United Kingdom (S.W., J.A.D.); Plant and Crop Science Division, School of Biosciences, University of Nottingham, Nr Loughborough LE12 5RD, United Kingdom (M.J.B., R.S.); and Babraham Institute, Babraham Hall, Babraham CB22 3AT, United Kingdom (S.W.)
منابع مشابه
MtLAX2, a Functional Homologue of the Arabidopsis Auxin Influx Transporter AUX1, Is Required for Nodule Organogenesis.
Most legume plants can form nodules, specialized lateral organs that form on roots, and house nitrogen-fixing bacteria collectively called rhizobia. The uptake of the phytohormone auxin into cells is known to be crucial for development of lateral roots. To test the role of auxin influx in nodulation we used the auxin influx inhibitors 1-naphthoxyacetic acid (1-NOA) and 2-NOA, which we found red...
متن کاملAuxin influx activity is associated with Frankia infection during actinorhizal nodule formation in Casuarina glauca.
Plants from the Casuarinaceae family enter symbiosis with the actinomycete Frankia leading to the formation of nitrogen-fixing root nodules. We observed that application of the auxin influx inhibitor 1-naphtoxyacetic acid perturbs actinorhizal nodule formation. This suggests a potential role for auxin influx carriers in the infection process. We therefore isolated and characterized homologs of ...
متن کاملThe binding of auxin to the Arabidopsis auxin influx transporter AUX1.
The cellular import of the hormone auxin is a fundamental requirement for the generation of auxin gradients that control a multitude of plant developmental processes. The AUX/LAX family of auxin importers, exemplified by AUX1 from Arabidopsis (Arabidopsis thaliana), has been shown to mediate auxin import when expressed heterologously. The quantitative nature of the interaction between AUX1 and ...
متن کاملCell Polarity Signaling in Arabidopsis Involves a BFA-Sensitive Auxin Influx Pathway
Coordination of cell and tissue polarity commonly involves directional signaling. In the Arabidopsis root epidermis, cell polarity is revealed by basal, root tip-oriented, hair outgrowth from hair-forming cells (trichoblasts). The plant hormone auxin displays polar movements and accumulates at maximum concentration in the root tip. The application of polar auxin transport inhibitors evokes chan...
متن کاملAUX1 regulates root gravitropism in Arabidopsis by facilitating auxin uptake within root apical tissues.
Plants employ a specialized transport system composed of separate influx and efflux carriers to mobilize the plant hormone auxin between its site(s) of synthesis and action. Mutations within the permease-like AUX1 protein significantly reduce the rate of carrier-mediated auxin uptake within Arabidopsis roots, conferring an agravitropic phenotype. We are able to bypass the defect within auxin up...
متن کامل