{"refrec":{"BRefID":144729,"RR":"<b>Rose, C.D.; Durako, M.J.</b> (1994). Induced photomorphogenesis by an altered R:FR light ratio in axenic <i>Ruppia maritima</i> L. <i>Bot. Mar. 37(6)</i>: 531-535. <a href=\"https://dx.doi.org/10.1515/botm.1994.37.6.531\" target=\"_blank\">https://dx.doi.org/10.1515/botm.1994.37.6.531</a>","BEntID":137839,"PublicFlag":1,"CheckedFlag":0,"wosflag":1,"vabbflag":null,"RefStringPartII":" <i>Bot. Mar. 37(6)</i>: 531-535. <a href=\"https://dx.doi.org/10.1515/botm.1994.37.6.531\" target=\"_blank\">https://dx.doi.org/10.1515/botm.1994.37.6.531</a>","DocTypID":8,"DocType":"Journal article","MarineFlag":1,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Rose, C.D.; Durako, M.J.","OrigTitleTranslFlag":0,"Authorstringtrunc":"Rose, C.D.; Durako, M.J.","Englishabstract":"The morphology and growth of the submerged macrophyte <i>Ruppia maritima</i> L. in axenic cultures differed when the plants were exposed to light with similar photosynthetically active radiation levels (76-80 mu E/m<sup>-2</sup>/s<sup>-1</sup> PAR) but with different red:far-red (R:FR) ratios. Plants irradiated with an R:FR ratio of 0.55 produced significantly fewer nodes and branches than did plants grown in an ambient R:FR ratio of 0.95. In contrast, biomass and internode lengths of the plants were the same after the two R:FR treatments, suggesting that the light treatments influenced qualitative rather than quantitative growth patterns. The R:FR ratio decreases in shallow aquatic habitats when red light is attenuated by photosynthetic pigments associated with phytoplankton, macroalgae, and submerged macrophyte leaf canopies. Understory plants generally respond to reduced R:FR ratios by modifying their growth so that they can escape shaded environments, thereby minimizing interspecific competition for light. Thus, the observed changes in growth patterns of <i>Ruppia</i> in response to qualitative changes in the light environment may have adaptive value for this species when it occurs as an understory plant in mixed-species seagrass beds.","AbstractOtherLang":null,"BibLvlCode":"AS","StandardTitle":"Induced photomorphogenesis by an altered R:FR light ratio in axenic <i>Ruppia maritima</i> L.","OrigTitleLangCode":"en","OrigTitleLangCodeExtended":"eng","OrigTitleLangID":15,"DateLastModified":{"date":"2026-04-20 01:31:51.323613","timezone_type":1,"timezone":"+02:00"},"UserAccessRight":null,"UserAccID":null,"AuthorKeywords":null,"OtherDescriptors":null,"Notes":null,"AnaPub":1994,"MonPub":null,"DateUpdate":"2010-04-26","DateCreate":"2010-04-26","SecASFANote":null,"ConfID":null,"PeerRev":1,"VlizCoreFlag":1,"WoScode":"WOS:A1994PY56200006","VABBcode":null,"OpenAcc":0,"DOI":"10.1515/botm.1994.37.6.531"},"refs":null,"anarec":{"AnaID":144729,"PubliDate":1994,"Pagination":"531-535","XtraPublOfAnaID":null,"ISBN":null,"Volume":"37","Issue":"6","BRefMon":null,"BRefMonRR":null,"BRefXtra":null,"BRefXtraRR":null,"SerBRefID":42293,"SerRR":"Botanica Marina. Walter de Gruyter & Co: Berlin; New York.  ISSN 0006-8055; e-ISSN 1437-4323","StandardTitleSer":"Botanica Marina","ISSN":"0006-8055","AbbrevSer":"Bot. Mar.","StandardTitleMon":null,"StartPage":531,"Pages":5,"ToPubliDate":null,"BRefBibLvlCode":"S","SerNotes":null},"monrec":null,"serrec":null,"relations":null,"relationsRev":null,"addrec":{"Line1":"4202 E. 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