| Autor: |
Patil, Vishal, Sun, Lin, Mohite, Vitthal, Liang, Junrong, Wang, Dazhi, Gao, Yahui, Chen, Changping |
| Předmět: |
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| Zdroj: |
Marine Pollution Bulletin; Jun2024, Vol. 203, pN.PAG-N.PAG, 1p |
| Abstrakt: |
This study delves into how two ecotypes of diatom affect the Pyropia haitanensis , a valuable and commercial red macroalga. We co-cultivated P. haitanensis with a planktonic diatom Skeletonema costatum and benthic diatom Navicula climacospheniae. The results showed that benthic diatom significantly hindered P. haitanensis growth, while planktonic ones had no major impact. The macroalga restrained planktonic diatom growth but did not affect benthic diatom. Photosynthetic pigments of macroalga, except chlorophyll, were higher, indicating stress when exposed to diatoms. Microscopic images revealed dense benthic diatom attachment, potentially stressing thalli due to limited light and EPS secretion. Total carbohydrate slightly decreased in both diatom treatments, while total protein significantly decreased with increasing benthic diatom densities. In summary, benthic diatom notably influenced P. haitanensis growth, pigments, and total protein levels. This study sheds light on the interaction between microalgal ecotypes and commercial macroalga P. haitanensis , which is crucial for its economic significance. • The effect of two ecotypes of diatoms on the commercially valuable macroalga Pyropia haitanensis was investigated. • During co-culture with Pyropia , benthic diatoms formed dense growth, while planktonic ones decreased with time. • Photosynthetic pigments of P. haitanensis indicate stress during the presence of both diatoms. • Overall, attachments of the benthic diatom Navicula climacospheniae significantly affected P. haitanensis. [ABSTRACT FROM AUTHOR] |
| Databáze: |
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