دورية أكاديمية
أعرض في EDS

Diffuse light and wetting differentially affect tropical tree leaf photosynthesis.

التفاصيل البيبلوغرافية
العنوان: Diffuse light and wetting differentially affect tropical tree leaf photosynthesis.
المؤلفون: Berry ZC; Schmid College of Science and Technology, Chapman University, Orange, CA, 92866, USA., Goldsmith GR; Schmid College of Science and Technology, Chapman University, Orange, CA, 92866, USA.
المصدر: The New phytologist [New Phytol] 2020 Jan; Vol. 225 (1), pp. 143-153. Date of Electronic Publication: 2019 Sep 18.
نوع المنشور: Journal Article; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, Non-P.H.S.
اللغة: English
بيانات الدورية: Publisher: Wiley on behalf of New Phytologist Trust Country of Publication: England NLM ID: 9882884 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1469-8137 (Electronic) Linking ISSN: 0028646X NLM ISO Abbreviation: New Phytol Subsets: MEDLINE
أسماء مطبوعة: Publication: Oxford : Wiley on behalf of New Phytologist Trust
Original Publication: London, New York [etc.] Academic Press.
مواضيع طبية MeSH: Photosynthesis/*physiology , Plant Leaves/*physiology , Trees/*physiology, Earth, Planet ; Ecosystem ; Forests ; Light ; Photosynthesis/radiation effects ; Plant Leaves/radiation effects ; Plant Stomata/physiology ; Plant Stomata/radiation effects ; Rain ; Trees/radiation effects ; Water/physiology ; Wettability
مستخلص: Most ecosystems experience frequent cloud cover resulting in light that is predominantly diffuse rather than direct. Moreover, these cloudy conditions are often accompanied by rain that results in wet leaf surfaces. Despite this, our understanding of photosynthesis is built upon measurements made on dry leaves experiencing direct light. Using a modified gas exchange setup, we measured the effects of diffuse light and leaf wetting on photosynthesis in canopy species from a tropical montane cloud forest. We demonstrate significant variation in species-level response to light quality independent of light intensity. Some species demonstrated 100% higher rates of photosynthesis in diffuse light, and others had 15% greater photosynthesis in direct light. Even at lower light intensities, diffuse light photosynthesis was equal to that under direct light conditions. Leaf wetting generally led to decreased photosynthesis, particularly when the leaf surface with stomata became wet; however, there was significant variation across species. Ultimately, we demonstrate that ecosystem photosynthesis is significantly altered in response to environmental conditions that are ubiquitous. Our results help to explain the observation that net ecosystem exchange can increase in cloudy conditions and can improve the representation of these processes in Earth systems models under projected scenarios of global climate change.
(© 2019 The Authors. New Phytologist © 2019 New Phytologist Trust.)
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فهرسة مساهمة: Keywords: Earth systems models; climate change; clouds; diffuse radiation; direct radiation; leaf wetting; photosynthetically active radiation; primary productivity
المشرفين على المادة: 059QF0KO0R (Water)
تواريخ الأحداث: Date Created: 20190817 Date Completed: 20201214 Latest Revision: 20201214
رمز التحديث: 20221213
DOI: 10.1111/nph.16121
PMID: 31418864
قاعدة البيانات: MEDLINE
الوصف
تدمد:1469-8137
DOI:10.1111/nph.16121