SEAFDEC/AQDINSTITUTIONAL REPOSITORY
    • English
    • 日本語
    • ไทย
    • Bahasa Indonesia
  • English 
    • English
    • 日本語
    • ไทย
    • Bahasa Indonesia
  • Login
View Item 
  •   SEAFDEC/AQD Institutional Repository Home
  • 03 SEAFDEC/AQD External Publications
  • Journal Articles, Conference Papers and Book Chapters by SEAFDEC Staff
  • Journal Articles
  • View Item
  •   SEAFDEC/AQD Institutional Repository Home
  • 03 SEAFDEC/AQD External Publications
  • Journal Articles, Conference Papers and Book Chapters by SEAFDEC Staff
  • Journal Articles
  • View Item
JavaScript is disabled for your browser. Some features of this site may not work without it.

Photosynthetic responses of ‘Neosiphonia sp. epiphyte-infected’ and healthy Kappaphycus alvarezii (Rhodophyta) to irradiance, salinity and pH variations

  • Global styles
  • MLA
  • Vancouver
  • Elsevier - Harvard
  • APA
  • Help
Thumbnail
View/Open
Request a copy
Date
2016
Author
Borlongan, Iris Ann G.
Luhan, Maria Rovilla J.
Padilla, Philip Ian P.
Hurtado, Anicia Q.
Page views
746
ASFA keyword
photosynthesis ASFA
seaweed culture ASFA
seaweed cultivation ASFA
epiphytes ASFA
AGROVOC keyword
Kappaphycus alvarezii AGROVOC
Seaweed epiphytes
Seaweed stress
Taxonomic term
Neosiphonia GBIF
Metadata
Show full item record

Cited times in Scopus



Share 
 
Abstract
Understanding the physiological condition of seaweeds as influenced by biotic and abiotic stress is vital from the perspective of massive expansion and sustainability of seaweed-based industries. The photosynthetic responses ofNeosiphonia sp. epiphyte-infected (INF) and healthy (HEA) Kappaphycus alvarezii under various combinations of irradiance, salinity and pH were studied using photosynthesis-irradiance (P-E) curves. Measurements of algal photosynthetic rates, expressed in terms of amount of oxygen production per fresh weight biomass per unit time (mg O2 g−1 FW h−1), were carried out using the light-dark bottle technique. Neosiphonia-infected K. alvarezii (INF) had lower photosynthetic rates than healthy ones (HEA). Similarities (p > 0.05) in light-saturated photosynthesis rates (Pmax) and significant differences (p < 0.05) in initial slope of curve (α) between INF and HEAK. alvarezii suggest that both samples are adapted to similar light conditions and differs only on photosynthetic efficiency. Low Pmax (0.7–2.0 mg O2 g−1 FW h−1) and high initial saturation irradiances (Ek = 90–519 μmol photons m−2 s−1) of INF seaweeds resulted to their low photosynthetic efficiency (α = 0.002–0.010). Such decline in α is attributed to the epiphyte, as Neosiphonia sp. covered almost the entire surface of K. alvarezii. An increase in chlorophyll-a (35–42.1 vs. 27.7–31.5 μg g−1 FW, HEA) and phycobilin (1.96–2.39 vs. 1.16–1.58 mg g−1 FW, HEA) contents was also observed in INF samples, suggesting acclimation to low-irradiance conditions, as a result of competition for light between the epiphyte and host. Both INF and HEA K. alvarezii also exhibited broad photosynthetic tolerance to short-term changes in irradiance, with no photoinhibition at the highest irradiance of 850 μmol photons m−2 s−1. K. alvarezii had a euryhaline photosynthetic response, with optimum salinity of 35 psu. Photosynthetic rates increased with decreasing pH, revealing K. alvarezii’s ability to modify its photosynthetic affinity for acidic seawater conditions; yet, their underlying mechanism of response to pH shifts still need to be further examined.
URI
http://hdl.handle.net/10862/3076
Suggested Citation
Borlongan, I. A. G., Luhan, M. R. J., Padilla, P. I. P., & Hurtado, A. Q. (2016). Photosynthetic responses of ‘Neosiphonia sp. epiphyte-infected’ and healthy Kappaphycus alvarezii (Rhodophyta) to irradiance, salinity and pH variations. Journal of Applied Phycology, 28(5), 2891-2902. https://doi.org/10.1007/s10811-016-0833-4 
DOI
10.1007/s10811-016-0833-4
Type
Article
ISSN
0921-8971; 1573-5176
Collections
  • Journal Articles [1201]

Related items

Showing items related by title, author, creator and subject.

  • Thumbnail

    Preliminary survey of pests and diseases of eucheumatoid seaweed farms in the Philippines 

    Faisan, Joseph P., Jr. ORCID; Luhan, Maria Rovilla; Sibonga, Rema ORCID; Mateo, Jonalyn; Ferriols, Victor Marco Emmanuel; Brakel, Janina; Ward, Georgia M.; Ross, Stuart; Bass, David; Stentiford, Grant; Brodie, Juliet; Hurtado, Anicia Q. (Springer, 2021-05-04)
    Farmed eucheumatoids are the top aquaculture commodity in the Philippines, contributing more than 60% of total national aquaculture production by volume. Despite significant production losses observed in recent years due ...
  • Thumbnail

    A preliminary summary on Kappaphycus farming and the impact of epiphytes 

    Critchley, A. T.; Largo, D.; Wee, W.; Bleicher L'honneur, G.; Hurtado, A. Q.; Schubert, J. (Japanese Society of Phycology, 2004)
    The read seaweed Kappaphycus alvarezii (Doty) Doty ex. P.C. Silva, commonly called "cottonii" in the processing industry, is used as raw material for the production of the hydrocolloid kappa carrageenan. Through biotechnological ...
  • Thumbnail

    Farm management and biosecurity measures of Eucheumatoids: Cultivars, pest and disease, risks and risk managements 

    Mateo, Jonalyn; Faisan, Joseph P., Jr. ORCID; Sibonga, Rema ORCID; Suyo, Jee Grace; Luhan, Maria Rovilla; Ferriols, Victor Marco Emmanuel; Hurtado, Anicia (United Kingdom Research and Innovation-Global Challenge Research Fund (UKRI-GCRF), 2021-03)
    This brochure was prepared and written after four years of research of the seaweed industry of the Philippines by the GlobalSeaweedSTAR Philippine Team in a layman’s language. This provides the different stakeholders of ...

© SEAFDEC/AQD  2023
Send Feedback | Subscribe
 

 

Browse

All of SAIRCommunities & CollectionsBy Issue DateAuthorsTitlesSubjectsThis CollectionBy Issue DateAuthorsTitlesSubjects

My Account

LoginRegister

Statistics

View Usage Statistics

© SEAFDEC/AQD  2023
Send Feedback | Subscribe
 

 

Export citations

Export the current results of the search query as a citation list. Select one of the available citation styles, or add a new one using the "Citations format" option present in the "My account" section.

The list of citations that can be exported is limited to items.

Export citations

Export the current item as a citation. Select one of the available citation styles, or add a new one using the "Citations format" option present in the "My account" section.

Export Citations

DOCUMENT REQUEST NOT AVAILABLE

This publication is still available (in PRINT) and for sale at AQD bookstore. The library is currently restricted to send PDF of publications that are still for sale.

You may contact bookstore@seafdec.org.ph or visit AQD bookstore for orders.

FILE UNDER EMBARGO

This file associated with this publication is currently under embargo. This will be available for download after the embargo date.