A microscopic study on scattering in tissue section of Alternanthera philoxeroides under polarized light

Roy, Shibsankar; Bhattacharya, Barnini; Bal, B.; Ghosh, Kuntal

doi:10.1007/s12038-021-00174-2

Cited by 2 publications

(1 citation statement)

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“…In this study, in vivo time-resolved fluorescence measurements on the gametophyte and tetrasporophyte life history phases of C. crispus has revealed the role of structural coloration in photoprotection mechanisms in this red alga. In fact, the gametophyte phase shows structural colour with a higher reflectivity around 400 nm as opposed to the tetrasporophyte without structural colour, where the little reflected light that is observed can be due to the scattering from the alga's tissue [ 48 ]. These observations are consistent with the study of Chandler et al [ 11 ] in their examination of the cuticular structure of C. crispus using anatomical and optical approaches.…”

Section: Discussionmentioning

confidence: 99%

Influence of structural colour on the photoprotective mechanism in the gametophyte phase of the red alga Chondrus crispus

Fleitas,

Sardar,

Arnould-Pétré

et al. 2024

J. R. Soc. Interface.

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Marine life is populated by a huge diversity of organisms with an incredible range of colour. While structural colour mechanisms and functions are usually well studied in marine animal species, there is a huge knowledge gap regarding the marine macroalgae (red, green and brown seaweeds) that have structural coloration and the biological significance of this phenomenon in these photosynthetic organisms. Here we show that structural colour in the gametophyte life history phase of the red alga Chondrus crispus plays an important role as a photoprotective mechanism in synergy with the other pigments present. In particular, we have demonstrated that blue structural coloration attenuates the more energetic light while simultaneously favouring green and red light harvesting through the external antennae (phycobilisomes) which possess an intensity-dependent photoprotection mechanism. These insights into the relationship between structural colour and photosynthetic light management further our understanding of the mechanisms involved.

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Section: Discussionmentioning

confidence: 99%