Abstract
Wild type (WT) tomato seedlings responded to a low red to far-red (R/FR) ratio with increased stem elongation, similar leaflet area expansion and lower shoot ethylene levels. The levels of endogenous growth-active GA1 and its immediate precursor GA20 were decreased by low R/FR ratio, whereas the levels of GA1 catabolite, GA8, increased. To examine the interaction of ethylene with GAs in regulating tomato shoot growth under low R/FR ratio, transgenic (T) seedlings bearing Le-ACS2 and Le-ACS4 antisense mRNA were utilized. Low R/FR ratio increased stem elongation and decreased ethylene levels in T tomato shoots, as it did in WT shoots. However, T stems were significantly taller than the WT stems under low R/FR ratio. Leaflet areas were significantly larger for T, than WT seedlings under both R/FR ratios. Low R/FR ratio did not decrease endogenous levels of GA1 and GA20 in T shoots, but did increase GA8 levels, which were higher than in WT shoots. These results, and hormone/inhibitor application studies, showed that in tomato shoots subjected to low R/FR ratio, GAs play a growth-promotive role in stem elongation, whereas ethylene is growth-inhibitory. Further, these results may imply that decreasing ethylene production under low R/FR ratio causes increases in stem elongation and GA levels.
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References
Abeles FB, Morgan PW, Saltveit ME Jr (1992) Ethylene in plant biology, 2nd edn. Academic Press, New York
Ballare CL (1999) Keeping up with the neighbours: phytochrome sensing and other signalling mechanisms. Trends Plant Sci 4:97–102
Ballare CL, Scopel AL, Sanchez RA (1990) Far-red radiation reflected from adjacent leaves: an early signal of competition in plant canopies. Science 247:329–333
Beall FD, Yeung EC, Pharis RP (1996) Far-red light stimulated internode elongation, cell division, cell elongation, and gibberellin levels in bean. Can J Bot 74:743–752
Emery RJN, Chinnappa CC, Chmielewski JG (1994a) Specialization, plant strategies, and phenotypic plasticity in populations of Stellaria longipes along an elevational gradient. Inter J Plant Sci 155:203–219
Emery RJN, Reid DM, Chinnappa CC (1994b) Phenotypic plasticity of stem elongation in two ecotypes of Stellaria longipes: the role of ethylene and response to wind. Plant Cell Environ 17:691–700
Fellner M, Zhang R, Pharis RP, Sawhney VK (2001) Reduced de-etiolation of hypocotyl growth in a tomato mutant is associated with hypersensitivity to, and high endogenous levels of, abscisic acid. J Exp Bot 52:725–738
Finlayson SA, Lee IJ, Morgan PW (1998) Phytochrome B and the regulation of circadian ethylene production in sorghum. Plant Physiol 116:17–25
Finlayson SA, Jung IJ, Mullet JE, Morgan PW (1999) The mechanism of rhythmic ethylene production in Sorghum. The role of phytochrome B and simulated shading. Plant Physiol 119:1083–1089
Jackson MB (1985) Ethylene and responses of plants to soil waterlogging and submergence. Ann Rev Plant Physiol 36:145–174
Kende H (1983) Ethylene biosynthesis. Ann Rev Plant Physiol Plant Mol Biol 44:283–307
Konings H, Jackson MB (1979) A relationship between rates of ethylene production by roots and the promoting or inhibiting effects of exogenous ethylene and water on root elongation. Zhourl Pflanzenphysiol 92:385–397
Kurepin LV, Mancell L, Reid DM, Pharis RP, Chinnappa CC (2006a) Possible roles for ethylene and gibberellins in the phenotypic plasticity of an alpine population of Stellaria longipes. Can J Bot 84:1101–1109
Kurepin LV, Pharis RP, Reid DM, Chinnappa CC (2006b) Involvement of gibberellins in the stem elongation of sun and shade ecotypes of Stellaria longipes that is induced by low light irradiance. Plant Cell Environ 29:1319–1328
Kurepin LV, Walton LJ, Reid DM, Pharis RP, Chinnappa CC (2006c) Growth and ethylene evolution by shade and sun ecotypes of Stellaria longipes in response to varied light quality and irradiance. Plant Cell Environ 29:647–652
Kurepin LV, Emery RJN, Pharis RP, Reid DM (2007a) The interaction of light quality and irradiance with gibberellins, cytokinins and auxin in regulating growth of Helianthus annuus hypocotyls. Plant Cell Environ 30:147–155
Kurepin LV, Emery RJN, Pharis RP, Reid DM (2007b) Uncoupling light quality from light irradiance effects in Helianthus annuus shoots: putative roles for gibberellins, auxin, cytokinins, abscisic acid and ethylene in leaf and internode growth. J Exper Bot 58:2145–2157
Kurepin LV, Shah S, Reid DM (2007c) Light quality regulation of endogenous levels of auxin, abscisic acid and ethylene evolution in petioles and leaves of wild type and ACC deaminase transgenic Brassica napus seedlings. Plant Growth Regul 52:53–60
Kurepin LV, Walton LJ, Reid DM (2007d) Interaction of red to far red light ratio and ethylene in regulating stem elongation of Helianthus annuus. Plant Growth Regul 51:53–61
Lee SH, Reid DM (1997) The role of endogenous ethylene in the expansion of Helianthus annuus leaves. Can J Bot 78:501–508
Liu J-H, Mukherjee I, Reid DM (1990) Adventitious rooting in hypocotyls of sunflower (Helianthus annuus) seedlings. III. The role of ethylene. Physiol Plant 78:268–276
Pearce DW, Reid DM, Pharis RP (1991) Ethylene-mediated regulation of gibberellin content and growth in Helianthus annuus L. Plant Physiol 95:1197–1202
Pierik R, Visser EJW, De Kroon H, Voesenek LACJ (2003) Ethylene is required in tobacco to successfully compete with proximate neighbours. Plant Cell Environ 26:1229–1234
Pierik R, Cuppens MLC, Voesenek LACJ, Visser EJW (2004) Interactions between ethylene and gibberellins in phytochrome-mediated shade avoidance responses in tobacco. Plant Physiol 136:2928–2936
Raskin I, Kende H (1984) The role of gibberellin in the growth response of submerged deep water rice. Plant Physiol 76:947–950
Reid DM, Sheffer MG, Pierce RC, Bezdicek DF, Linzon SN, Revven T, Spenser MS, Vena F (1985) Ethylene in the environment: scientific criteria for assessing its effects on environmental quality. National Research Council of Canada, Ottawa, publication 22497, p 110
Rijnders JGHM, Yang YY, Kamiya Y, Takahashi N, Barendse GWM, Blom CWPM, Voesenek LACJ (1997) Ethylene enhances gibberellin levels and petiole sensitivity in flooding-tolerant Rumex palustris but not in flooding-intolerant R. acetosa. Planta 203:20–25
Rood SB, Blake TJ, Pharis RP (1983) Gibberellins and heterosis in maize. II. Response to gibberellic acid and metabolism of [3H] gibberellin A20. Plant Physiol 71:645–651
Smith H (2000) Phytochromes and light signal perception by plants–an emerging synthesis. Nature 407:585–591
Sponsel VM, Hedden P (2004) Gibberellin biosynthesis and inactivation. In: Davies PJ (ed) Plant hormones: biosynthesis, signal transduction, action. Kluwer, Netherlands, pp 63–94
Sun T-P (2004) Gibberellin signal transduction in stem elongation and leaf growth. In: Davies PJ (ed) Plant hormones: biosynthesis, signal transduction, action. Kluwer, Netherlands, pp 304–320
Van Tuinen A, Peters AHLJ, Kendrick RE, Zeevaart JAD, Koornneef M (1999) Characterisation of the procera mutant of tomato and the interaction of gibberellins with end-of-day far-red light treatments. Physiol Plant 106:121–128
Walton LJ, Kurepin LV, Reid DM, Chinnappa CC (2006) Stem and leaf growth of alpine sun and prairie shade ecotypes of Stellaria longipes under different photoperiods: role of ethylene. Can J Bot 84:1496–1502
Yip WK, Mak MH, Wong YM (2002) The effects of antisense Le-ACS2 and Le-ACS4 transgenes on ethylene biosynthesis and fruit development in tomato, Plant Biology 2002 supplement, p. 98, abstract 368
Zobel RW, Robert LW (1978) Effect of low concentration of ethylene on cell division and cell differentiation in lettuce pit explants. Can J Bot 56:987–990
Acknowledgments
We would like to thank Ms. Linda J. Walton for technical assistance with ethylene analysis, Ms. Bonnie Smith and Mr. Ken Girard for excellent greenhouse assistance. This work was funded by NSERC (Canada) grants to ECY and DMR, and Research Grant Council (Hong Kong SAR) grant to WKY.
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Kurepin, L.V., Yip, WK., Fan, R. et al. The roles and interactions of ethylene with gibberellins in the far-red enriched light-mediated growth of Solanum lycopersicum seedlings. Plant Growth Regul 61, 215–222 (2010). https://doi.org/10.1007/s10725-010-9465-x
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DOI: https://doi.org/10.1007/s10725-010-9465-x