Photosynthtic Inhibition on the Microalga Dunaliella sallina (Chlorophyta) by the Dried Macroalga Gracilaria lemaneiformis (Rhodophyta)

Ye, C.P.; Zhang, M.C.; Ganapathy, T.; Zuo, Yuegang; Yang, Yufeng

doi:10.1109/icbeb.2012.296

Cited by 3 publications

(2 citation statements)

References 22 publications

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“…Tang and Gobler 21 showed that the dried Ulva lactuca was equally or more potent than the fresh material, an observation consistent with the hypothesis that polyunsaturated fatty acids or organosulfur compounds are active allelopathic agents 41 , which were also observed in dried seaweed of G. lemaneiformis and G. tenuistipitat in our previous experiments [42][43][44] . Dithiolane and trithiane compounds isolated and identified from Characean species were also found to have allelopathic effects on epiphytic diatoms and other phytoplankton 47 .…”

Section: Discussionsupporting

confidence: 77%

The photo-physiologica inhibited mechanism on typical HABs,Scrippsiella trochoidea, by seawater extraction of macroalga, Gracilaria Lemaniformis

Ye¹,

Chen²,

Zhao³

2016

Proceedings of the 2016 5th International Conference on Energy and Environmental Protection (ICEEP 2016)

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Macroalga, due to its high-harvesting yield, easily available, low-cost, and eco-friendly, become more and more favored tool-like alga for researchers. The method of control harmful algal blooms (HABs) by macroalga is an international study issue, and the water extract of seaweed have the advantage of full-time and all-location. While the most study were focused on the level of apparent growth, little was known about the photo-physiological inhibited mechanism in HABs by macroalga. In this study, the thecate dinoflagellate bloom microalga, Scrippsiella trochoidea, was co-cultured with different grams seawater extraction from fresh macroalga Gracilaria lemaneiformis under laboratory conditions photosynthetic oxygen evolution and Chlorophyll fluorescence techniques are used, to study the effects of the seawater extract of Gracilaria lemaneiformis on the photosystem II (PSⅡ) of red tide algae. The results are as follows: Compared with control, the biomass of S. trochoideain 0.6g/L treatment was higher, while the biomass in 1.2g/L, 2.4g/L and 4.8g/L treatment are lower, which shows the pattern of hormesis effect. Photosynthetic oxygen evolution rates (P max) were decreased with the increase of extract concentration, while the dark respiration rates (Rd) were converse. The J, I, P points in 0.6g/L treatment were higher than the control one, while J, I, P points in 1.2g/L treatment is lower. OJIP curve in 2.4g/L and 4.8g/L tend to be a straight line. The value of Wk, ABC/RC, TRo/RC, DIo/RC, Vj, φDo and Mo in 2.4g/L and 4.8g/L treatments was increased, while the value of fraction of OEC,φPo, Fv/Fo, ETo/RC, ψ0, and φEo was decreased. The inhibitory effects of the macroalga's sea water extraction on the microalga, according to the JIP-test and pigments contents, include a decrease in the number of active reaction centers, the blocking-up of the electron transport chain. This study suggests that water extraction of G. lemaneiformis is effective in inhibiting photophysiological activity of S. trochoidea, and thus be a potential 'tool alga' for controlling S. trochoidea blooms.

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Section: Discussionsupporting

confidence: 77%

The photo-physiologica inhibited mechanism on typical HABs,Scrippsiella trochoidea, by seawater extraction of macroalga, Gracilaria Lemaniformis

Ye¹,

Chen²,

Zhao³

2016

Proceedings of the 2016 5th International Conference on Energy and Environmental Protection (ICEEP 2016)

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“…In unicellular green freshwater algae, OJIPs has been used to evaluate negative effects to photosystem II of heavy metals (Andosch et al 2012, Zemri et al 2012, Perreault et al 2011, silver nanoparticles (Okarroum et al 2012), performance index PI abs during cultivation in culture (Dunaliella primalecta, Kruskopf et Flynn 2006), dose-dependent inhibitory pattern caused by dried powdered macroalga Gracilaria lemaneiformis on salt-resistant Dunaliella salina (Ye et al 2012). For Antarctic algal species, only limited number of photosynthetic studies exploiting OJIP approach has yet been done.…”

Section: Introductionmentioning

confidence: 99%

Sensitivity of Antarctic freshwater algae to salt stress assessed by fast chlorophyll fluorescence transient

Vilumbrales¹,

Skácelová²,

Barták³

2013

Czech Polar Rep.

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In this study, we investigated the effects of salt stress (2 mM NaCl) on excitation energy transfer from light harvesting complexes to photosystem II (PS II) in two Antarctic algal species: Klebsormidium sp. and Zygnema sp. Short-term salt stress led to a significant changes in the shape of chlorophyll fluorescence transient (OJIP). Analyses of the polyphasic fluorescence transients (OJIP) showed that the fluorescence yield at the phases J, I and P declined considerably with the time of exposition to salt stress. In both experimental species, OJIP transients reached lowest values of chlorophyll fluorescence signal after 30/60 min. of NaCl exposition. Then, OJIP shape and chlorophyll fluorescence showed species-specific recovery and rised towards original values (about 2/3 of untreated control). Analyses of chlorophyll fluorescence parameters derived from OJIPs showed that salt stress led to a decrease in the maximal efficiency of PS II photochemistry (F V /F M ) in Zygnema sp. but not Klebsormidium sp. The results indicated that the probability of excitation energy transfer before and beyond Q A , and the yield of electron transport beyond Q A is limited by salt-induced stress in Zygnema sp. In addition, salt stress resulted in a decrease in the photosynthetic electron transport per PS II reaction center, but both increase and decrease in the trapping per PS II reaction center was found. Performace index (PI abs ) was affected negatively in Zygnema sp. but possitively Klebsormidium sp. indicating that the latter species was more resistant to salt stress than Zygnema sp.

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Allelopathic Effect of Macroalga Gracilaria Tenuistipitata (Rhodophyta) on the Photosynthetic Apparatus of Red-tide Causing Microalga Prorocentrum micans

Ye¹,

Zhang²

2013

IERI Procedia

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Photosynthtic Inhibition on the Microalga Dunaliella sallina (Chlorophyta) by the Dried Macroalga Gracilaria lemaneiformis (Rhodophyta)

Cited by 3 publications

References 22 publications

The photo-physiologica inhibited mechanism on typical HABs,Scrippsiella trochoidea, by seawater extraction of macroalga, Gracilaria Lemaniformis

The photo-physiologica inhibited mechanism on typical HABs,Scrippsiella trochoidea, by seawater extraction of macroalga, Gracilaria Lemaniformis

Sensitivity of Antarctic freshwater algae to salt stress assessed by fast chlorophyll fluorescence transient

Allelopathic Effect of Macroalga Gracilaria Tenuistipitata (Rhodophyta) on the Photosynthetic Apparatus of Red-tide Causing Microalga Prorocentrum micans

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