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Publication Type J
Authors Ferreira, C; Simioni, C; Schmidt, EC; Ramlov, F; Maraschin, M; Bouzon, ZL
Author Full Name Ferreira, Chirle; Simioni, Carmen; Schmidt, Eder C.; Ramlov, Fernanda; Maraschin, Marcelo; Bouzon, Zenilda L.
Title The influence of salinity on growth, morphology, leaf ultrastructure, and cell viability of the seagrass Halodule wrightii Ascherson
Source PROTOPLASMA
Language English
Document Type Article
Author Keywords Hydropoten; Wall ingrowths; Plastoglobules
Keywords Plus FLORIDA BAY; THALASSIA-TESTUDINUM; SALT TOLERANCE; RESPONSES; PLANTS; ABUNDANCE; SURVIVAL; STRESS; LEAVES; GRASS
Abstract Halodule wrightii is an ecologically important seagrass; however, little is known about the adaptation of this species in the context of environmental change, particularly changes arising from alterations in salinity of coastal ecosystems. This study aimed to determine the effects of different salinities on growth, morphology, leaf ultrastructure, and cell viability of H. wrightii. To accomplish this, plants were cultivated for 21 days in salinities of 25, 35, and 45. More hydropotens were observed in samples exposed to salinity of 45 with increased invagination of the plasma membrane and cell wall. These invaginations were also observed in other epidermal cells of the leaf blade. In particular, a significant retraction of plasma membrane was seen in samples exposed to salinity of 45, with possible deposition of compounds between the membrane and cell wall. Osmotic stress in samples exposed to salinity of 45 affected the chloroplasts through an increase in plastoglobules and thylakoids by granum in the epidermal chloroplasts of the leaf and decrease in the number of chloroplasts. Overall, this study showed that H. wrightii can survive within salinities that range between 25 and 45 without changing growth rate. However, the plant did have higher cell viability at salinity of 35. Salt stress in mesocosms, at both salinity of 25 and 45, decreased cell viability in this species. H . wrightii had greater changes in salinity of 45; this showed that the species is more tolerant of salinities below this value.
Author Address [Ferreira, Chirle] Univ Fed Santa Catarina, Dept Cell Biol Embryol & Genet, Postgrad Program Cell Biol & Dev, CP 476, BR-88049900 Florianopolis, SC, Brazil; [Simioni, Carmen; Schmidt, Eder C.; Bouzon, Zenilda L.] Univ Fed Santa Catarina, Plant Cell Biol Lab, Dept Cell Biol Embryol & Genet, CP 476, BR-88049900 Florianopolis, SC, Brazil; [Ramlov, Fernanda; Maraschin, Marcelo] Univ Fed Santa Catarina, Plant Morphogenesis & Biochem Lab, CP 476, BR-88049900 Florianopolis, SC, Brazil
Reprint Address Ferreira, C (reprint author), Univ Fed Santa Catarina, Dept Cell Biol Embryol & Genet, Postgrad Program Cell Biol & Dev, CP 476, BR-88049900 Florianopolis, SC, Brazil.
E-mail Address chirle.f@ufsc.br
Cited Reference Count 47
Times Cited 1
Total Times Cited Count (WoS, BCI, and CSCD) 1
Publisher SPRINGER WIEN
Publisher City WIEN
Publisher Address SACHSENPLATZ 4-6, PO BOX 89, A-1201 WIEN, AUSTRIA
ISSN 0033-183X
29-Character Source Abbreviation PROTOPLASMA
ISO Source Abbreviation Protoplasma
Publication Date JUL
Year Published 2017
Volume 254
Issue 4
Beginning Page 1529
Ending Page 1537
Digital Object Identifier (DOI) 10.1007/s00709-016-1041-4
Page Count 9
Web of Science Category Plant Sciences; Cell Biology
Subject Category Plant Sciences; Cell Biology
Document Delivery Number EY2BT
Unique Article Identifier WOS:000403774000007
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