Abstract
Whole plants of Oryza glumaepatula (accession W1246) displayed rapid internodal elongation under partial submergence, comparable with those of deepwater or floating Oryza sativa cultivars. In excised stem segments of O. glumaepatula, submergence and hypoxia equally induced internodal elongation, whereas ethylene, which plays an important role in the rapid internodal elongation of deepwater rice, induced internodal elongation of only one-third relative to submergence or hypoxia. Pretreatments of stem segments with 1-methylcyclopropene (an ethylene action inhibitor) almost completely blocked ethylene-induced internodal elongation but had limited effects on submergence-induced internodal elongation. These results indicate that hypoxia, but not ethylene, triggers rapid internodal elongation during submergence in O. glumaepatula. O. glumaepatula W1246 possessed a homologue of SNORKEL1 (SK1) and two homologues of SNORKEL2 (SK2). SK1 and SK2 encode ethylene response factors and evoke rapid internodal elongation in response to ethylene in O. sativa. However, none of these homologues showed an increased expression level in internodes of stem segments treated with hypoxia.
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References
Abeles FB, Morgan PW, Saltveit ME Jr (1992) Ethylene analysis and properties of the gas. In: Ethylene in plant biology, 2nd edn. Academic Press, San Diego, pp 14–25
Akimoto M, Shimamoto Y, Morishima H (1998) Population genetic structure of wild rice Oryza glumaepatula distributed in the Amazon flood area influenced by its life-history traits. Mol Ecol 7:1371–1381
Azuma T, Mihara F, Uchida N, Yasuda T, Yamaguchi T (1990) Internodal elongation and ethylene concentration of floating rice stem sections submerged at different water depths. Jpn J Tropic Agric 34:265–270
Azuma T, Mihara F, Uchida N, Yasuda T, Yamaguchi T (1991) Influence of humidity on ethylene-induced internodal elongation in floating rice. Plant Cell Physiol 32:307–309
Azuma T, Hirano T, Deki Y, Uchida N, Yasuda T, Yamaguchi T (1995) Involvement of the decrease in levels of abscisic acid in the internodal elongation of submerged floating rice. J Plant Physiol 146:323–328
Azuma T, Uchida N, Yasuda T (2001) Low levels of oxygen promote internodal elongation in floating rice independently of enhanced ethylene production. Plant Growth Regul 34:181–186
Azuma T, Hatanaka T, Uchida N, Yasuda T (2003) Enhancement of transpiration by ethylene is responsible for absence of internodal elongation in floating rice at low humidity. J Plant Physiol 160:1125–1128
Azuma T, Inoue Y, Hamada Y, Okishio T, Sasayama D, Itoh K (2013) Anoxia promotes gravitropic curvature in rice pulvini but inhibits it in wheat and oat pulvini. J Plant Physiol 170:1158–1164
Bailey-Serres J, Fukao T, Ronald P, Ismail A, Heuer S, Mackill D (2010) Submergence tolerance rice: SUB1’s journey from landrace to modern cultivar. Rice 3:138–147
Blom CWPM., Voesenek LACJ. (1996) Flooding: the survival strategies of plants. Trends Ecol Evol 11:290–295
Catling D (1992) Rice in deep water. MacMillan, London
Chu YE, Morishima H, Oka HI (1969) Reproductive barriers distributed in cultivated rice species and their wild relatives. Jpn J Genet 44:207–223
Fukao T, Xu K, Ronald PC, Bailey-Serres J (2006) A variable cluster of ethylene response factor-like genes regulates metabolic and developmental acclimation responses to submergence in rice. Plant Cell 18:2021–2034
Hattori Y, Nagai K, Furukawa S, Song XJ, Kawano R, Sakakibara H, Wu J, Matumoto T, Yoshimura A, Kitano H, Matsuoka M, Mori H, Ashikari M (2009) The ethylene response factors SNORKEL1 and SNORKEL2 allow rice to adapt to deep water. Nature 460:1026–1030
Kende H, van der Knaap E, Cho HT (1998) Deepwater rice: a model plant to study stem elongation. Plant Physiol 118:1105–1110
Okishio T, Sasayama D, Hirano T, Akimoto M, Itoh K, Azuma T (2014) Growth promotion and inhibition of the Amazonian wild rice species Oryza grandiglumis to survive flooding. Planta 240:459–469
Okishio T, Sasayama D, Hirano T, Akimoto M, Itoh K, Azuma T (2015) Ethylene in not involved in adaptive responses to flooding in the Amazonian wild rice species Oryza grandiglumis. J Plant Physiol 174:49–54
Piedade MTF, Junk WJ, Long SP (1991) The productivity of the C4 grass Echinochloa polystachya on the Amazon floodplain. Ecology 72:1456–1463
Raskin I, Kende H (1984) Regulation of growth in stem sections of deep-water rice. Planta 60:66–72
Setter TL, Laureles EV (1996) The beneficial effect of reduced elongation growth on submergence tolerance of rice. J Exp Bot 74:1551–1559
Vaughan DA (1994) The wild relatives of rice: a genetic resources handbook. International Rice Research Institute, Manila
Voesenek LACJ, Sasidharan R (2013) Ethylene– and oxygen signalling–drive plant survival during flooding. Plant Biol 15:426–435
Wang ZY, Second G, Tanksley SD (1992) Polymorphism and phylogenetic relationships among species in the genus Oryza as determined by analysis of nuclear RFLPs. Theor Appl Genet 83:565–581
Xu K, Xu X, Fukao T, Canlas P, Maghirang-Rodriguez R, Heuer S, Ismail AM, Bailey-Serres J, Ronald PC, Mackill DJ (2006) Sub1A is an ethylene-response-factor-like gene that confers submergence tolerance to rice. Nature 442:705–708
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We thank Rohm & Haas China Inc. for kindly providing 1-MCP. This work was supported by JSPS KAKENHI Grant No. 24580022.
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Sasayama, D., Okishio, T., Hirano, T. et al. Internodal elongation under submergence in the Amazonian wild rice species Oryza glumaepatula: the growth response is induced by hypoxia but not by ethylene. Plant Growth Regul 85, 123–132 (2018). https://doi.org/10.1007/s10725-018-0378-4
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DOI: https://doi.org/10.1007/s10725-018-0378-4