Effects of Salinity on the Growth and Survival of the Seedlings of Mangrove, Rhizophora stylosa
Hiromi Kanai, Mitsuki Tajima, Atsushi Sakai
International Journal of Plant & Soil Science · pp. 879–893 · Published 29 Apr 2014
10.9734/IJPSS/2014/9812Abstract
Aims: There are contradictory views on whether mangroves are obligate halophytes or facultative halophytes. In this study, we examined: (1) if seedlings of a mangrove, Rhizophora stylosa, require NaCl for their survival and (2) whether the growth response of R. stylosa seedlings under varying salinities was explained from the context of carbon economics. Methodology: Seedlings of R. stylosa were hydroponically grown under varying salinities (0 - 480 mMNaCl) and their growth, mortality, photosynthetic and respiration rates were analyzed. Results: Most of the seedlings grown under NaCl-free condition died during the 34-week culture, demonstrating their salt dependency. The best growth was accomplished under moderate salinity (240 mMNaCl) with highest stem elongation, maximum biomass gain and lowest leaf mortality. Whole-plant photosynthetic production was highest under the moderate salinity and declined towards high and low salinity ranges whereas whole-plant respiration did not increase towards high and low salinity ranges. The lower photosynthetic production under high salinity involved reductions in both leaf area and photosynthetic potential per area while the lower photosynthetic production under low-salinity involved reduction in leaf area only. Conclusion: Rhizophora stylosa appeared to require salt for survival. The maximal growth under moderate salinity might be explained by reduced photosynthetic production under low and high salinity ranges. The reduced photosynthetic potential and leaf area causing lower photosynthetic production under high salinity might be ultimately explained by the accumulation of excessive salt in leaf cells. In contrast, the ultimate causes for the reduced leaf area and increased mortality under low salinity remained unclear. Several possible mechanisms are discussed in relation to ion metabolism.
Cited by 10
Sílvio Roberto Fernandes Soares, Marcelo Tavares Gurgel, Neyton de Oliveira Miranda · Ensaios e Ciência C Biológicas Agrárias e da Saúde · 2020
Hiromi Kanai, Atsushi Sakai · Aquatic Botany · 2021
Muhammad Sufwandika Wijaya, Muhammad Kamal, Prima Widayani · Regional Studies in Marine Science · 2025
Róger Moya, Carolina Tenorio, Danilo Torres-Gómez · Water · 2024
Souichirou SUGIURA, Shimpei TAKAHASHI · Journal of the Japanese Society of Revegetation Technology · 2020
Chung-I Chen, Kuan-Hung Lin, Meng-Yuan Huang · Cells · 2022
BOY A. MARPAUNG, BUDIADI BUDIADI, AMBAR PERTIWININGRUM · Biodiversitas Journal of Biological Diversity · 2022
HERY PURNOBASUKI, SITTA AMALIYAH, KAZUTAKA KOBAYASHI · Borneo Journal of Resource Science and Technology · 2023
Souichirou Sugiura, Shimpei Takahashi · Landscape and Ecological Engineering · 2021
C-W Wang, S-L Wong, T-S Liao · Tree Physiology · 2021
Related research
- Broad-range pH/Temperature-stable Cellulase from a Novel Hydrocarbon Contaminated Mangrove soil Bacterium, Bacillus licheniformis VVA21 — shares topic coverage
- Nursery Techniques and Primary Growth of Rhizophora apiculata Plantation in Coastal Area, Central Vietnam — shares topic coverage
- Aspects of the Population Dynamics of Periwinkle (Tympanotonus fuscatus) along the Bonny River, Nigeria — shares topic coverage
- Seasonal Variation of Bivalves of Intertidal Mangrove Area of Shirgaon, Ratnagiri, Maharashtra — shares topic coverage
- Challenges and Opportunities for Restoring the Threatened Mangroves — shares topic coverage
Article metrics
Real usage data collected on this platform.
0
Page views
0
PDF downloads
0
Outbound clicks
10
Citations
Views by country
Approximate, from request IP at view time — not citizenship or institution. Countries with fewer than 5 views are grouped as "Other".
No views recorded yet.
Traffic sources
Referring site, by host.
No traffic recorded yet.
Views and downloads exclude known bots/crawlers. Citations combines this platform's own DOI-resolved index with each external source's own reported total — see Cited by above for individually listed citing works. Last refreshed 0 seconds ago.