RETRACTED: Anatomical adjustment of mature leaves of sycamore maple (Acer pseudoplatanus L.) to increased irradiance

Wyka, Tomasz P.; Robakowski, Piotr; Żytkowiak, Roma; Oleksyn, J.

RETRACTED: Anatomical adjustment of mature leaves of sycamore maple (Acer pseudoplatanus L.) to increased irradiance

2022

Wyka, Tomasz P. | Robakowski, Piotr | Żytkowiak, Roma | Oleksyn, J.

Trees regenerating in the understory respond to increased availability of light caused by gap formation by undergoing a range of morphological and physiological adjustments. These adjustments include the production of thick, sun-type leaves containing thicker mesophyll and longer palisade cells than in shade-type leaves. We asked whether in the shade-regenerating tree Acer pseudoplatanus, the increase in leaf thickness and expansion of leaf tissues are possible also in leaves that had been fully formed prior to the increase in irradiance, a response reported so far only for a handful of species. We acclimated potted seedlings to eight levels (from 1 to 100%) of solar irradiance and, in late summer, transferred a subset of them to full sunlight. Within 30 days, the shaded leaves increased leaf mass per area and became thicker mostly due to elongation of palisade cells, except for the most shaded individuals which suffered irreversible photo-oxidative damage. This anatomical acclimation was accompanied by partial degradation of chlorophyll and a transient decline in photosynthetic efficiency of PSII (Fᵥ/FM). These effects were related to the degree of pre-shading. The Fᵥ/FM recovered substantially within the re-acclimation period. However, leaves of transferred plants were shed significantly earlier in the fall, indicating that the acclimation was not fully effective. These results show that A. pseudoplatanus is one of the few known species in which mature leaves may re-acclimate anatomically to increased irradiance. This may be a potentially important mechanism enhancing utilization of gaps created during the growing season.

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Mots clés AGROVOC

acer pseudoplatanus chlorophyll leaves mesophyll photosystem ii research solar radiation summer

Informations bibliographiques

Publié dans

Photosynthesis research

Volume 152 Numéro 1 Pagination 55 - 71 ISSN 0166-8595

Editeur

Elsevier Ltd

D'autres materias

Acclimation; Specific leaf weight; Understory; Light intensity; Leaf thickness

Langue

anglais

Note

Retracted: July 22022, v.152, p.55 ; 10.1007/s11120-022-00898-8 The authors have retracted this article. Following publication, errors were identified affecting Figs. 4 and 6. The values of mean total chlorophyll concentration in control plants and individual leaves (Figs. 4a and 6a, respectively) reported in the article were several fold higher than those from other reports. Moreover, the chlorophyll a/b ratios of control plants presented in Fig. 4c were also much higher than reported values for tree seedlings. The authors believe these discrepancies are due to technical errors and intend to submit a revised manuscript which will undergo peer review. All authors agree with this retraction.

Type

Journal Article; Text

Sur AGRIS depuis: 2024-02-27

Format: MODS

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Cette notice bibliographique a été fournie par National Agricultural Library

Découvrez la collection de ce fournisseur de données dans AGRIS

Liens

DOI http://dx.doi.org/10.1007/s11120-022-00898-8

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