Branching Mutant rms-2 in Pisum sativum (Grafting Studies and Endogenous Indole-3-Acetic Acid Levels)
Open accessAbstract
Isogenic lines of pea (Pisum sativum L.) were used to determine the physiological site of action of the Rms-2 gene, which maintains apical dominance, and its effect on endogenous free indole-3-acetic acid (IAA) levels. In mutant rms-2 scions, which normally produce lateral branches below node 3 and above node 7, apical dominance was almost fully restored by grafting to Rms-2 (wild-type) stocks. In the reciprocal grafts, rms-2 stocks did not promote branching in wild-type shoots. Together, these results suggest that the Rms-2 gene inhibits branching in the shoot of pea by controlling the synthesis of a translocatable (hormone-like) substance that is produced in the roots and/or cotyledons and in the shoot. At all stages, including the stage at which aerial lateral buds commence outgrowth, the level of IAA in rms-2 shoots was elevated (up to 5-fold) in comparison with that in wild-type shoots. The internode length of rms-2 plants was 40% less than in wild-type plants, and the mutant plants allocated significantly more dry weight to the shoot than to the root in comparison with wild-type plants. Grafting to wild-type stocks did not normalize IAA levels or internode length in rms-2 scions, even though it inhibited branching, suggesting that the involvement of Rms-2 in the control of IAA level and internode length may be confined to processes in the shoot.
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Strigolactone Acts Downstream of Auxin to Regulate Bud Outgrowth in Pea and Arabidopsis
Brewer, P. B., Dun, E. A., Ferguson, B. J., Rameau, C., & Beveridge, C. A. (2009) · PLANT PHYSIOLOGY · doi:10.1104/pp.108.134783 · Cited by 418 · see citing works
“…in pea (Pisum sativum), decreased apical dominance (dad) in petunia (Petunia hybrida), more axillary growth (max) in Arabidopsis (Arabidopsis thaliana), and particular dwarf (d) mutants in rice (Oryza sativa; Beveridge et al., 1994; Napoli, 1996; Stirnberg et al., 2002; Ishikawa et al., 2005).”
BackgroundSelf-citationAuxin-cytokinin interactions in the control of shoot branching
Shimizu-Sato, S., Tanaka, M., & Mori, H. (2009) · Plant Molecular Biology · doi:10.1007/s11103-008-9416-3 · Cited by 387 · see citing works
Hormonal control of shoot branching
Ongaro, V., & Leyser, O. (2007) · Journal of Experimental Botany · doi:10.1093/jxb/erm134 · Cited by 373 · see citing works
Johnson, X., Brcich, T., Dun, E. A., Goussot, M., Haurogné, K., Beveridge, C. A., & Rameau, C. (2006) · Plant Physiology · doi:10.1104/pp.106.087676 · Cited by 319 · see citing works
Self-citationThe hormonal regulation of axillary bud growth in <i>Arabidopsis</i>
Chatfield, S. P., Stirnberg, P., Forde, B. G., & Leyser, O. (2000) · The Plant Journal · doi:10.1046/j.1365-313x.2000.00862.x · Cited by 284 · see citing works
Apical Dominance and Shoot Branching. Divergent Opinions or Divergent Mechanisms?
Dun, E. A., Ferguson, B. J., & Beveridge, C. A. (2006) · Plant Physiology · doi:10.1104/pp.106.086868 · Cited by 227 · see citing works
Self-citationMorris, S. E., Turnbull, C. G. N., Murfet, I. C., & Beveridge, C. A. (2001) · Plant Physiology · doi:10.1104/pp.126.3.1205 · Cited by 208 · see citing works
Self-citationTantikanjana, T., Yong, J. W. H., Letham, D. S., Griffith, M., Hussain, M., Ljung, K., Sandberg, G., & Sundaresan, V. (2001) · Genes & Development · doi:10.1101/gad.887301 · Cited by 194 · see citing works
Axillary bud outgrowth: sending a message
Beveridge, C. A. (2006) · Current Opinion in Plant Biology · doi:10.1016/j.pbi.2005.11.006 · Cited by 168 · see citing works
Self-citationBeveridge, C. A., Symons, G. M., & Turnbull, C. G. N. (2000) · Plant Physiology · doi:10.1104/pp.123.2.689 · Cited by 162 · see citing works
Self-citationExogenous Auxin Effects on Lateral Bud Outgrowth in Decapitated Shoots
CLINE, M. (1996) · Annals of Botany · doi:10.1006/anbo.1996.0119 · Cited by 144 · see citing works
Turnbull, C. G. N., Raymond, M. A. A., Dodd, I. C., & Morris, S. E. (1997) · Planta · doi:10.1007/s004250050128 · Cited by 116 · see citing works
Feedback regulation of xylem cytokinin content is conserved in pea and Arabidopsis
Foo, E., Morris, S. E., Parmenter, K., Young, N., Wang, H., Jones, A., Rameau, C., Turnbull, C. G. N., & Beveridge, C. A. (2007) · Plant Physiology · doi:10.1104/pp.106.093708 · Cited by 107 · see citing works
Self-citationDun, E. A., Hanan, J., & Beveridge, C. A. (2009) · The Plant Cell · doi:10.1105/tpc.109.069013 · Cited by 71 · see citing works
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- Authors
- Beveridge, C. A., Ross, J. J., & Murfet, I. C.
- Affiliations
- University of Tasmania (AU)
- Venue
- Plant Physiology
- Publisher
- Oxford University Press (OUP)
- Published
- 1994-03-01
- Volume
- 104
- Issue
- 3
- Pages
- 953-959
- ISSN
- 0032-0889 (ISSN-L)
- 1532-2548
- PMC
- PMC160693
- OpenAlex
- W1599452294
- Cited by
- 132
- References
- 0
- Citations by year
- 2026: 1 · 2025: 3 · 2024: 4 · 2023: 3 · 2022: 3 · 2021: 3 · 2020: 2 · 2018: 1 · 2017: 11 · 2016: 5 · 2015: 4 · 2014: 7 · 2013: 8 · 2012: 7
- FWCI
- 2.98
- Type
- journal article
- Language
- en
- Open access
- green
- www.ncbi.nlm.nih.gov
- Locations
- PLANT PHYSIOLOGY (publishedVersion)
- PubMed Central (publishedVersion)
- PubMed (publishedVersion)
- Topics
- Life Sciences › Agricultural and Biological Sciences › Plant Science › Plant Molecular Biology Research
- Life Sciences › Agricultural and Biological Sciences › Plant Science › Plant Parasitism and Resistance
- Life Sciences › Agricultural and Biological Sciences › Plant Science › Plant Physiology and Cultivation Studies
- Keywords
- pea, Pisum sativum, apical dominance, indole-3-acetic acid, branching, grafting, internode length, axillary buds, isogenic lines
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