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Comment on "Increased growing-season productivity drives earlier autumn leaf senescence in temperate trees".

Richard J Norby
Published in: Science (New York, N.Y.) (2021)
Zani et al (Research Articles, 27 November 2020, p. 1066) propose that enhancement of deciduous tree photosynthesis in a CO2-enriched atmosphere will advance autumn leaf senescence. This premise is not supported by consistent observations from free-air CO2 enrichment (FACE) experiments. In most FACE experiments, leaf senescence or abscission was not altered or was delayed in trees exposed to elevated CO2.
Keyphrases
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