Photoinhibition in shallow‐water colonies of the coral <i>Stylophora pistillata</i> as measured in situ

Winters, Gidon; Loya, Yossi; Röttgers, Rüdiger; Beer, Sven

doi:10.4319/lo.2003.48.4.1388

Cited by 82 publications

(52 citation statements)

References 25 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The colonies chosen had been previously marked and their respective zooxanthellae genotyped (mentioned above). The downwelling irradiances at the collection sites were measured from 10:00 to 10:15 h with the Diving-PAM's (Walz; see below) quantum sensor, which had previously been calibrated against an LI-189 quantum sensor connected to an LI-1000 data logger (Li-Cor; see Winters et al 2003) and were 30 and 40 µmol photons m -2 s -1 at depths of 30 m and 2 m under the pier, respectively, as compared to 400 µmol photons m -2 s -1 at 2 m beside the pier. Each colony was broken into 2 fragments, which were kept in an upright position by gently inserting them into plastic pegs submerged in 3.4 l plastic outdoor aquaria.…”

Section: Methodsmentioning

confidence: 99%

“…Indeed, such 'spatial photoacclimation' has been shown to occur in both the host (Anthony et al 2005) and the algal symbiont (Mass et al 2007). However, even within the same depth, corals must acclimate to changes in light over time ('temporal photoacclimation') both on a diel (Winters et al 2003) and on a seasonal (Warner et al 2002, Winters et al 2006 scale. For shallow-growing corals in particular, temporal photoacclimation may be of importance in order to ensure not only the effective capture of relatively low irradiances during the winter (Winters et al 2006), but also to minimise the effects of photoinhibition caused by high light both throughout the day and during the summer (e.g.…”

Section: Introductionmentioning

confidence: 99%

“…For shallow-growing corals in particular, temporal photoacclimation may be of importance in order to ensure not only the effective capture of relatively low irradiances during the winter (Winters et al 2006), but also to minimise the effects of photoinhibition caused by high light both throughout the day and during the summer (e.g. Winters et al 2003). Although studying natural temporal photoacclimation in corals may require year-round measurements, photosynthesis of hermatypic corals has mostly been studied over relatively short time scales, from hours to several days, or during 1 season only (e.g.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Spatial and temporal photoacclimation of Stylophora pistillata: zooxanthella size, pigmentation, location and clade

Winters¹,

Beer²,

Zvi³

et al. 2009

Mar. Ecol. Prog. Ser.

View full text Add to dashboard Cite

Photoacclimation of the symbiotic hermatypic coral Stylophora pistillata was studied both for colonies growing at different depths (1 to 20 m) sampled within the same season ('spatial photoacclimation') and for colonies growing at the same depth (5 m) but sampled throughout the year ('temporal photoacclimation'). Specimens were darker and had increased chlorophyll densities (chlorophyll per coral surface area) under low-light conditions caused both by increased depth and, in shallow-growing specimens, by the winter season. However, while increased depth involved increased zooxanthella chlorophyll content, acclimation to low irradiances by shallow-growing corals during the winter mostly involved an increase in algal density. In shallow-growing corals, both zooxanthella chlorophyll content and coral chlorophyll density fluctuated seasonally in correlation with light more than with nitrogen or temperature. This could be related to the fact that reefs in Eilat, Israel, are exposed to more solar radiation than many other reefs in the world. Histological analyses of high-light corals showed that zooxanthellae were located deeper inside the host tissue and were smaller in diameter compared to zooxanthellae from low-light corals. Additionally, while deep-water colonies hosted clade C zooxanthellae, colonies growing in shallow waters, both in high-and very low-light environments, hosted clade A. These clade differences were found to affect coral physiology, as examined in a short-term thermal stress experiment, with clade-A colonies having higher thermal resilience than clade-C colonies. Taken together, our results show evidence of different mechanisms that help adjust the light-capturing abilities of S. pistillata zooxanthellae to spatial and temporal changes in irradiance.

show abstract

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Spatial and temporal photoacclimation of Stylophora pistillata: zooxanthella size, pigmentation, location and clade

Winters¹,

Beer²,

Zvi³

et al. 2009

Mar. Ecol. Prog. Ser.

View full text Add to dashboard Cite

show abstract

“…The rETR values given here are relative because we did not consider the fraction of light ) for 3 h. The fragments were allowed to recover at different temperatures. Chlorophyll fluorescence, photochemical efficiency (F v /F m ) and the photosynthetic capacity (rETR max ), symbiotic dinoflagellate density and chlorophyll content were measured before and after high-light treatment and at 24, 72 and 120 h during the recovery period (arrows) absorbed by the photosynthetic pigments of the zooxanthellae within the coral tissue (see also Hoegh-Guldberg & Jones 1999, Winters et al 2003 or the distribution of absorbed light between pigments associated with 2 photosystems. rETR max was calculated by regression analysis.…”

Section: Methodsmentioning

confidence: 99%

Differential recovery of PSII function and electron transport rate in symbiotic dinoflagellates as a possible determinant of bleaching susceptibility of corals

Yakovleva¹,

Hidaka²

2004

Mar. Ecol. Prog. Ser.

View full text Add to dashboard Cite

“…Photosynthesis is said to have reached steady state once constant with light intensity (over a time scale of minutes) (Suggett et al 2003, Ralph & Gademann 2005. Some studies have measured steady state fluorescence relative to in situ ambient PAR to great effect , Winters et al 2003. However, achieving steady state over a series of light steps can take up to an hour; a period of time that is generally impractical for investigating corals in situ where diving must be employed.…”

Section: Resale or Republication Not Permitted Without Written Consenmentioning

confidence: 99%

Photoacclimation, growth and distribution of massive coral species in clear and turbid waters

Hennige¹,

Smith²,

Perkins³

et al. 2008

Mar. Ecol. Prog. Ser.

115

View full text Add to dashboard Cite

Massive coral species play a key role in coral reef ecosystems, adding significantly to physical integrity, long term stability and reef biodiversity. This study coupled the assessment of the distribution and abundance of 4 dominant massive coral species, Diploastrea heliopora, Favia speciosa, F. matthaii and Porites lutea, with investigations into species-specific photoacclimatory responses within the Wakatobi Marine National Park of southeast Sulawesi, Indonesia, to determine the potential of photoacclimation to be a driver of biological success. For this, rapid light curves using pulse amplitude modulated (PAM) chlorophyll a fluorescence techniques were employed with additional manipulations to circumvent differences of light quality and absorption between species and across environmental gradients. P. lutea was examined over a range of depths and sites to determine patterns of photoacclimation, and all 4 species were assessed at a single depth between sites for which long-term data for coral community structure and growth existed. Light availability was more highly constrained with depth than between sites; consequently, photoacclimation patterns for P. lutea appeared greater with depth than across environmental gradients. All 4 species were found to differentially modify the extent of non-photochemical quenching to maintain a constant photochemical operating efficiency (qP). Therefore, our results suggest that these massive corals photoacclimate to ensure a constant light-dependent rate of reduction of the plastoquinone pool across growth environments.KEY WORDS: Chlorophyll a fluorescence ⋅ Zooxanthellae ⋅ PAM ⋅ Photoacclimation ⋅ Massive coral ⋅ Indo-Pacific Resale or republication not permitted without written consent of the publisherMar Ecol Prog Ser 369: [77][78][79][80][81][82][83][84][85][86][87][88] 2008 adjustments that arise following a change in light environment (Falkowski & LaRoche 1991) and is genetically constrained (MacIntyre et al. 2002). Zooxanthellae (in hospite and isolated) photoacclimate in the same way as for many other microalgae, by adjusting various cellular constituents including pigmentation and number of 'reaction centres' for light harvesting (Falkowski & Dubinsky 1981, Iglesias-Prieto & Trench 1994. However, these patterns of photoacclimation have been largely deduced using cultures of zooxanthellae isolated from their coral host. Quantifying zooxanthellae photoacclimation in hospite is more problematic. In particular, the methods employed are often destructive to the coral and thus not practical to describe broad ecosystem processes (Falkowski & Dubinsky 1981). These techniques also require removal of the corals from their habitat and may thus perturb their natural physiological state (Jones & Hoegh-Guldberg 2001). Instead, researchers have turned towards the use of nondestructive chlorophyll a (chl a) fluorescence induction techniques, which are popular for examining phytoplankton and higher plant photophysiology, to investigate coral photophysiology; in particu...

show abstract

Photoinhibition in shallow‐water colonies of the coral Stylophora pistillata as measured in situ

Cited by 82 publications

References 25 publications

Spatial and temporal photoacclimation of Stylophora pistillata: zooxanthella size, pigmentation, location and clade

Spatial and temporal photoacclimation of Stylophora pistillata: zooxanthella size, pigmentation, location and clade

Differential recovery of PSII function and electron transport rate in symbiotic dinoflagellates as a possible determinant of bleaching susceptibility of corals

Photoacclimation, growth and distribution of massive coral species in clear and turbid waters

Contact Info

Product

Resources

About