Partitioning of respired CO2 in newly sprouted Moso bamboo culms

Chongyu Ye; Chongyu Ye; Chongyu Ye; Qiangfa Zeng; Qiangfa Zeng; Qiangfa Zeng; Keda Hu; Dongming Fang; Dirk Hölscher; Huaqiang Du; Huaqiang Du; Huaqiang Du; Yongjun Shi; Yongjun Shi; Yongjun Shi; Yufeng Zhou; Yufeng Zhou; Yufeng Zhou; Frank Berninger; Tingting Mei; Tingting Mei; Tingting Mei; Guomo Zhou; Guomo Zhou; Guomo Zhou

doi:10.3389/fpls.2023.1154232

Frontiers in Plant Science (Apr 2023)

Partitioning of respired CO2 in newly sprouted Moso bamboo culms

Chongyu Ye,
Chongyu Ye,
Chongyu Ye,
Qiangfa Zeng,
Qiangfa Zeng,
Qiangfa Zeng,
Keda Hu,
Dongming Fang,
Dirk Hölscher,
Huaqiang Du,
Huaqiang Du,
Huaqiang Du,
Yongjun Shi,
Yongjun Shi,
Yongjun Shi,
Yufeng Zhou,
Yufeng Zhou,
Yufeng Zhou,
Frank Berninger,
Tingting Mei,
Tingting Mei,
Tingting Mei,
Guomo Zhou,
Guomo Zhou,
Guomo Zhou

Affiliations

Chongyu Ye: State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, Lin’an, Zhejiang, China
Chongyu Ye: Key Laboratory of Carbon Cycling in Forest Ecosystems and Carbon Sequestration of Zhejiang Province, Zhejiang A&F University, Lin’an, Zhejiang, China
Chongyu Ye: College of Environmental and Resource Sciences, Zhejiang A&F University, Lin’an, Zhejiang, China
Qiangfa Zeng: State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, Lin’an, Zhejiang, China
Qiangfa Zeng: Key Laboratory of Carbon Cycling in Forest Ecosystems and Carbon Sequestration of Zhejiang Province, Zhejiang A&F University, Lin’an, Zhejiang, China
Qiangfa Zeng: College of Environmental and Resource Sciences, Zhejiang A&F University, Lin’an, Zhejiang, China
Keda Hu: College of Environmental and Resource Sciences, Zhejiang A&F University, Lin’an, Zhejiang, China
Dongming Fang: Jiyang College, Zhejiang A&F University, Zhuji, Zhejiang, China
Dirk Hölscher: Tropical Silviculture and Forest Ecology, University of Göttingen, Göttingen, Germany
Huaqiang Du: State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, Lin’an, Zhejiang, China
Huaqiang Du: Key Laboratory of Carbon Cycling in Forest Ecosystems and Carbon Sequestration of Zhejiang Province, Zhejiang A&F University, Lin’an, Zhejiang, China
Huaqiang Du: College of Environmental and Resource Sciences, Zhejiang A&F University, Lin’an, Zhejiang, China
Yongjun Shi: State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, Lin’an, Zhejiang, China
Yongjun Shi: Key Laboratory of Carbon Cycling in Forest Ecosystems and Carbon Sequestration of Zhejiang Province, Zhejiang A&F University, Lin’an, Zhejiang, China
Yongjun Shi: College of Environmental and Resource Sciences, Zhejiang A&F University, Lin’an, Zhejiang, China
Yufeng Zhou: State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, Lin’an, Zhejiang, China
Yufeng Zhou: Key Laboratory of Carbon Cycling in Forest Ecosystems and Carbon Sequestration of Zhejiang Province, Zhejiang A&F University, Lin’an, Zhejiang, China
Yufeng Zhou: College of Environmental and Resource Sciences, Zhejiang A&F University, Lin’an, Zhejiang, China
Frank Berninger: Department of Environmental and Biological Sciences, University of Eastern Finland, Joensuu, Finland
Tingting Mei: State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, Lin’an, Zhejiang, China
Tingting Mei: Key Laboratory of Carbon Cycling in Forest Ecosystems and Carbon Sequestration of Zhejiang Province, Zhejiang A&F University, Lin’an, Zhejiang, China
Tingting Mei: College of Environmental and Resource Sciences, Zhejiang A&F University, Lin’an, Zhejiang, China
Guomo Zhou: State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, Lin’an, Zhejiang, China
Guomo Zhou: Key Laboratory of Carbon Cycling in Forest Ecosystems and Carbon Sequestration of Zhejiang Province, Zhejiang A&F University, Lin’an, Zhejiang, China
Guomo Zhou: College of Environmental and Resource Sciences, Zhejiang A&F University, Lin’an, Zhejiang, China

DOI: https://doi.org/10.3389/fpls.2023.1154232
Journal volume & issue: Vol. 14

Abstract

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Stem respiration (Rs) plays a vital role in ecosystem carbon cycling. However, the measured efflux on the stem surface (Es) is not always in situ Rs but only part of it. A previously proposed mass balance framework (MBF) attempted to explore the multiple partitioning pathways of Rs, including sap-flow-transported and internal storage of Rs, in addition to Es. This study proposed stem photosynthesis as an additional partitioning pathway to the MBF. Correspondingly, a double-chamber apparatus was designed and applied on newly sprouted Moso bamboo (Phyllostachys edulis) in leafless and leaved stages. Rs of newly sprouted bamboo were twice as high in the leafless stage (7.41 ± 2.66 μmol m−2 s−1) than in the leaved stage (3.47 ± 2.43 μmol m−2 s−1). Es accounted for ~80% of Rs, while sap flow may take away ~2% of Rs in both leafless and leaved stages. Culm photosynthesis accounted for ~9% and 13% of Rs, respectively. Carbon sequestration from culm photosynthesis accounted for approximately 2% of the aboveground bamboo biomass in the leafless stage. High culm photosynthesis but low sap flow during the leafless stage and vice versa during the leaved stage make bamboo an outstanding choice for exploring the MBF.

Published in Frontiers in Plant Science

ISSN: 1664-462X (Online)
Publisher: Frontiers Media S.A.
Country of publisher: Switzerland
LCC subjects: Agriculture: Plant culture
Website: https://www.frontiersin.org/journals/plant-science

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