Effect of light and water availability on spore germination and protonemal growth of the Neotropical moss Thamniopsis incurva (Pilotrichaceae)

dc.creatorda Silva, ASM
dc.creatorPorto, KC
dc.creatorSimabukuro, EA
dc.date2009
dc.dateAPR
dc.date2014-11-17T03:36:53Z
dc.date2015-11-26T16:37:00Z
dc.date2014-11-17T03:36:53Z
dc.date2015-11-26T16:37:00Z
dc.date.accessioned2018-03-28T23:19:55Z
dc.date.available2018-03-28T23:19:55Z
dc.identifierCryptogamie Bryologie. Adac-cryptogamie, v. 30, n. 2, n. 243, n. 257, 2009.
dc.identifier1290-0796
dc.identifierWOS:000266022300002
dc.identifierhttp://www.repositorio.unicamp.br/jspui/handle/REPOSIP/79762
dc.identifierhttp://www.repositorio.unicamp.br/handle/REPOSIP/79762
dc.identifierhttp://repositorio.unicamp.br/jspui/handle/REPOSIP/79762
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1271948
dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.descriptionThamniopsis incurva is a Neotropical moss whose populations are usually associated with streams in tropical rainforests. In this paper, the spore germination and longevity, as well as the protonemal growth under different irradiances and water potentials, were studied. Mature capsules from populations in Atlantic Forest of northeastern Brazil (state of Pernambuco) were sterilized and the spores distributed on Knop nutrient medium (liquid and solidified with 0.4% agar). The spores quickly lost viability over three months. The germination was observed in both light (photoperiod 12h) and continuous darkness conditions. Variations of irradiance (1.4 to 14.4 mu mol m(-2) s(-1)) did not inhibit protonemal growth and appearance of buds. On the other hand, spore germination, protonemal growth and gametophyte establishment were constrained from -0.06 MPa water potential. It appears that T incurva invests in high production of sporophytes and spores per capsule, whose ability to germinate is elevated in contrast to its longevity. Additionally, spores and protonemata are very sensitive to low water potentials, likely restricting the establishment of the species to very wet microhabitats.
dc.description30
dc.description2
dc.description243
dc.description257
dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.languageen
dc.publisherAdac-cryptogamie
dc.publisherParis
dc.publisherFrança
dc.relationCryptogamie Bryologie
dc.relationCryptogam. Bryol.
dc.rightsfechado
dc.sourceWeb of Science
dc.subjectBryophyte
dc.subjectecophysiology
dc.subjectgermination
dc.subjectprotonema
dc.subjectwater availability
dc.subjectirradiance
dc.subjectPolyethylene-glycol
dc.subjectBryophytes
dc.subjectEstablishment
dc.subjectSphagnum
dc.subjectBrazil
dc.titleEffect of light and water availability on spore germination and protonemal growth of the Neotropical moss Thamniopsis incurva (Pilotrichaceae)
dc.typeArtículos de revistas


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