Comparison of Photosynthetic Responses of Healthy and ‘Diseased’ Kappaphycus alvarezii (Doty) Doty Using P vs I Curve

Ganzon-Fortes, Edna T.; Azanza-Corrales, R.; Aliaza, Tehane T.

doi:10.1515/botm.1993.36.6.503

Cited by 10 publications

(10 citation statements)

References 10 publications

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“…The evidence for the lack of oxygenic photo-inhibition remains inconclusive in our study, given that the experimental irradiance (oxygenic P-E curve) did not exceed 500 μmol photons m −2 s −1 . However, the oxygenic P-E results corresponded well with previous reports (Ganzon-Fortes et al 1993;Aguirre-von-Wobeser et al 2001), where there was no obvious effects of photoinhibition up to 800 μmol photons m −2 s −1 , suggesting that irradiance measured during the day probably does not induce a reduction in oxygenic evolution, although this may occur at magnitudes of irradiance observed near noon, and when under fine clear skies. Unfortunately, we did not conduct any in situ measurement of oxygen evolution for our material; therefore, the possibility of photo-inhibition should be examined by in situ and in vitro measurements in the future.…”

Section: Discussionsupporting

confidence: 90%

“…Hence, physiological characteristics of this species including growth, photosynthesis, and carrageenan yields have also been extensively reported through field and laboratory studies over the past three decades (e.g., Glenn and Doty 1990;Hurtado-Ponce et al 2001;Muñoz et al 2004;Wakibia et al 2006;Hayashi et al 2007). Indeed, a number of previous studies have also contributed to elucidating the photobiology of this species, especially in tropical waters under intense photosynthetic active radiation and UV radiation (Ganzon-Fortes et al 1993;Aguirre-von-Wobeser et al 2001;Granbom et al 2001;Jacobsen et al 2003;Schubert et al 2004Schubert et al , 2006Schmidt et al 2010;Reis et al 2011).…”

Section: Introductionmentioning

confidence: 99%

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The effect of irradiance and temperature on the photosynthesis and growth of a cultivated red alga Kappaphycus alvarezii (Solieriaceae) from Vietnam, based on in situ and in vitro measurements

Terada

Nishihara

et al. 2015

J Appl Phycol

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The effect of irradiance and temperature on the photosynthesis and growth of a Vietnamese-cultivated red alga, Kappaphycus alvarezii, was determined by laboratory and field measurements. Dissolved oxygen sensors and pulse amplitude modulated (PAM) fluorometry were used for the measurements of photosynthetic efficiency. A Diving-PAM revealed that in situ measurements of the effective quantum yield (Φ PSII ) were negatively correlated with incident irradiance. Φ PSII decreased as irradiance increased at noon and recovered in the evening, suggesting photo-inhibition. A model of the net photosynthesis-irradiance (P-E) relationship determined in a laboratory experiment at 26°C revealed that the net photosynthetic rate quickly increased at irradiances below the estimated saturation irradiance of 154 μmol photons m −2 s −1 (95 % Bayesian credible interval (BCI) of 117-203 μmol photons m −2 s −1 ). Gross photosynthesis and dark respiration under the laboratory measurements were also determined over a range of temperatures (8-42°C), revealing that the gross photosynthetic rates of 8.0 (BCI 7.03-9.59) μg O 2 g ww −1 min −1 at 31.1 (BCI 30.2-32.0)°C, and the dark respiration rate increased exponentially from a low of 0.22 μg O 2 g ww −1 min −1 at 10°C to a high of 1.88 μg O 2 g ww −1 min −1 at 42°C. The estimated highest value of the maximum quantum yield (Φ PSII at 0 μmol photons m −2 s −1 = F v /F m ) determined with the Imaging-PAM and occurred at 22.2 (BCI 20.8-23.5)°C and was 0.51 (BCI 0.48-0.54).Relative growth rate (RGR) and the survival rate after 2 weeks of laboratory culture showed that the relatively high growth rates (ca. 1.5 %) occurred at 28 and 32°C; however, mortality was 100 % at 36°C. This species is considered to be well-adapted to the natural temperature range of study site; however, it is likely close to the marginal temperature conditions. Furthermore, daytime incident irradiance on the frond under fine clear sky might be too strong for the effective photosynthesis of this species, suggesting that optimum irradiance for gross photosynthesis with the minimum decline of Φ PSII seems to be much lower.

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Section: Discussionsupporting

confidence: 90%

Section: Introductionmentioning

confidence: 99%

The effect of irradiance and temperature on the photosynthesis and growth of a cultivated red alga Kappaphycus alvarezii (Solieriaceae) from Vietnam, based on in situ and in vitro measurements

Terada

Nishihara

et al. 2015

J Appl Phycol

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“…‘ice‐ice disease’ and epiphytic filamentous algae Neosiphonia sp. infestations; Ganzon‐Fortes et al ; Hurtado et al ; Borlongan et al , ) on the physiology and production of carrageenan in Eucheuma and Kappapychus species, has proven crucial for development of improved agricultural technologies and management protocols ensuring the sustainability of the seaweed farming industry, especially in the context of global climate change. There are approximately 16 morphotypes or commercial varieties of Kappaphycus (Hurtado et al ), having distinct acclimation and adaptation capabilities relative to cultivation method or site (Trono et al ); hence optimum conditions need to be established for each variety independently.…”

Section: Discussionmentioning

confidence: 99%

Light and temperature effects on photosynthetic activity of Eucheuma denticulatum and Kappaphycus alvarezii (brown and green color morphotypes) from Sulawesi Utara, Indonesia

Borlongan

Gerung

Nishihara

et al. 2016

Phycological Research

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SUMMARY Knowledge concerning the effects of several abiotic factors on the physiology of carrageenophytes is essential both in ecological and economic standpoints, to ensure their sufficient supply for the sustainability of seaweed‐based industries. This paper presents the photosynthetic characteristics of farmed carrageenophytes, E ucheuma denticulatum and K appaphycus alvarezii [brown (BRN) and green (GRN) color morphotypes] from Sulawesi Utara (Sulawesi Island), Indonesia, as determined by examining their photosynthetic response across different temperatures and irradiances using dissolved oxygen measurements and pulse‐amplitude modulated fluorometer. Net photosynthesis–irradiance ( P – E ) curves at 26°C revealed that net photosynthetic rates of the three seaweeds gradually increased until the estimated saturation irradiances ( E k ) of 58 μmol photons m− 2 s−1 (49–68 μmol photons m− 2 s−1, 95% Bayesian prediction intervals; BPI) for E . denticulatum, and 158 and 143 μmol photons m− 2 s−1 (134–185 and 99–203 μmol photons m− 2 s−1, 95% BPI) for BRN and GRN K . alvarezii, respectively; and that no photoinhibition was observed at the highest irradiance of 1000 μmol photons m− 2 s−1. All seaweed samples exhibited photosynthetic tolerance to high PAR as shown by their recovery in maximum quantum yields (Fv / Fm ) following chronic exposures; as well as tolerance over a broad range of temperature, which is from 19 to 33°C for E . denticulatum, 20–29°C for BRN K . alvarezii, and 17–32°C for GRN K . alvarezii. Temperature responses of these carrageenophytes indicated that they were well‐adapted to the annual seawater temperatures in the cultivation site; however, they are also likely close to threshold levels for thermal inhibition, given the decline in Fv / Fm above 30°C.

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“…The tissue damage manifested by whitening caused by extreme temperatures, parallels the ice-ice condition produced in seaweed farms. Ganzon-Fortes et al (1993) observed that the signif-icant drop in the concentration of photosynthetic pigments in ice-iced K alvarezii thalli can cause the loss of its photosynthetic efficiency, thus the poor growth performance observed prior to ice-ice. This study further showed that ice-ice whitening of short segments of the branches could also be triggered by low irradiance and low salinity, and were quite different from those induced by high temperatures.…”

Section: Discussionmentioning

confidence: 99%

Laboratory-induced development of the ice-ice disease of the farmed red algae Kappaphycus alvarezii and Eucheuma denticulatum (Solieriaceae, Gigartinales, Rhodophyta)

et al. 1995

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The most common perception of unfavorable environmental factors causing the ice-ice disease in the farmed seaweeds, Kappaphycus and Eucheuma, was demonstrated in this study for the first time using stressful conditions of abiotic factors in a continuous culture system. Light intensity of less than 50 /mol photon m -2 s-1 and salinity of 20%o or less induced ice-ice whitening characterized by short segments at midbranches which were similar to those observed in the Philippine seaweed farms, while temperatures of up to 33-35 C resulted in wide-scale whitening leading to complete damage of the branches. These effects were preceded by slow growth rates from an optimum of 3.7% d -1 to almost -2.0% d -1. Mechanical stress by wound injury did not result to ice-ice whitening similar to the above. Environmental factors observed to trigger ice-ice in the laboratory, although may not necessarily parallel those in the field, may act synergestically to produce similar effects.

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Comparison of Photosynthetic Responses of Healthy and ‘Diseased’ Kappaphycus alvarezii (Doty) Doty Using P vs I Curve

Cited by 10 publications

References 10 publications

The effect of irradiance and temperature on the photosynthesis and growth of a cultivated red alga Kappaphycus alvarezii (Solieriaceae) from Vietnam, based on in situ and in vitro measurements

The effect of irradiance and temperature on the photosynthesis and growth of a cultivated red alga Kappaphycus alvarezii (Solieriaceae) from Vietnam, based on in situ and in vitro measurements

Light and temperature effects on photosynthetic activity of Eucheuma denticulatum and Kappaphycus alvarezii (brown and green color morphotypes) from Sulawesi Utara, Indonesia

Laboratory-induced development of the ice-ice disease of the farmed red algae Kappaphycus alvarezii and Eucheuma denticulatum (Solieriaceae, Gigartinales, Rhodophyta)

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