Light piping driven photosynthesis in the soil: low-light adapted active photosynthetic apparatus in the under-soil hypocotyl segments of bean (Phaseolus vulgaris)
  • Metaadatok
Tartalom: http://real.mtak.hu/63181/
Archívum: MTA Könyvtár
Gyûjtemény: Status = Published


Type = Article
Cím:
Light piping driven photosynthesis in the soil: low-light adapted active photosynthetic apparatus in the under-soil hypocotyl segments of bean (Phaseolus vulgaris)
Létrehozó:
Kakuszi, Andrea
Sárvári, Éva
Solti, Ãdám
Czégény, Gyula
Hideg, Éva
Hunyadi-Gulyás, Éva
Bóka, Károly
Böddi, Béla
Kiadó:
Elsevier Science Publishers B.V.
Dátum:
2016-06-08
Téma:
QK10 Plant physiology / növényélettan
QK20 Plant morphology. Plant anatomy / növénymorfológia, -anatómia
Tartalmi leírás:
Photosynthetic activity was identified in the under-soil hypocotyl part of 14-day-old soil-grown bean plants (Phaseolus vulgaris L. cv. Magnum) cultivated in pots under natural light-dark cycles. Electron microscopic, proteomic and fluorescence kinetic and imaging methods were used to study the photosynthetic apparatus and its activity. Under-soil shoots at 0-2 cm soil depth featured chloroplasts with low grana and starch grains and with pigment-protein compositions similar to those of the above-soil green shoot parts. However, the relative amounts of photosystem II (PSII) supercomplexes were higher; in addition a PIP-type aquaporin protein was identified in the under-soil thylakoids. Chlorophyll-a fluorescence induction measurements showed that the above- and under-soil hypocotyl segments had similar photochemical yields at low (10-55 µmol photons m-2 s-1) light intensities. However, at higher photon flux densities the electron transport rate decreased in the under-soil shoot parts due to inactivation of the PSII reaction centers. These properties show the development of a low-light adapted photosynthetic apparatus driven by light piping of the above-soil shoot. The results of this paper demonstrate that the classic model assigning source and sink functions to above- and under-soil tissues is to be refined, and a low-light adapted photosynthetic apparatus in under-soil bean hypocotyls is capable of contributing to its own carbon supply.
Nyelv:
magyar
Típus:
Article
PeerReviewed
info:eu-repo/semantics/article
Formátum:
text
Azonosító:
Kakuszi, Andrea and Sárvári, Éva and Solti, Ãdám and Czégény, Gyula and Hideg, Éva and Hunyadi-Gulyás, Éva and Bóka, Károly and Böddi, Béla (2016) Light piping driven photosynthesis in the soil: low-light adapted active photosynthetic apparatus in the under-soil hypocotyl segments of bean (Phaseolus vulgaris). JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY, 161. pp. 422-429. ISSN 1011-1344
Kapcsolat:
https://doi.org/10.1016/j.jphotobiol.2016.06.009
10.1016/j.jphotobiol.2016.06.009