Are above- and below-ground phenology in sync?

The New Phytologist
Rose Z Abramoff, Adrien C Finzi

Abstract

Globally, root production accounts for 33-67% of terrestrial net primary productivity and influences decomposition via root production and turnover, carbon (C) allocation to mycorrhizal fungi and root exudation. As recognized above ground, the timing of phenological events affects terrestrial C balance, yet there is no parallel understanding for below-ground phenology. In this paper we examine the phenology of root production and its relationship to temperature, soil moisture, and above-ground phenology. Synthesizing 87 observations of whole-plant phenology from 40 studies, we found that, on average, root growth occurs 25 ± 8 d after shoot growth but that the offset between the peak in root and shoot growth varies > 200 d across biomes (boreal, temperate, Mediterranean, and subtropical). Root and shoot growth are positively correlated with median monthly temperature and mean monthly precipitation in boreal, temperate, and subtropical biomes. However, a temperature hysteresis in these biomes leads to the hypothesis that internal controls over C allocation to roots are an equally, if not more, important driver of phenology. The specific mechanisms are as yet unclear but they are likely mediated by some combination of photoassimil...Continue Reading

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Citations

Mar 5, 2016·Journal of Experimental Botany·Laura RadvilleDavid M Eissenstat
Jun 16, 2016·The New Phytologist·Marcin ZadwornyJacek Oleksyn
Nov 26, 2014·Global Change Biology·Adrien C FinziRichard P Phillips
Apr 15, 2018·Ecology·Carrie AndrewHåvard Kauserud
Jun 28, 2017·Tree Physiology·Andrea Winkler, Walter Oberhuber
Nov 24, 2016·American Journal of Botany·Laura RadvilleDavid M Eissenstat
Mar 19, 2019·Global Change Biology·Shilong PiaoXiaolin Zhu
Jul 26, 2019·Global Change Biology·Loren P AlbertScott R Saleska
Apr 11, 2018·Frontiers in Plant Science·Gina Rainer-Lethaus, Walter Oberhuber
Apr 3, 2016·Global Change Biology·Junbin ZhaoMats B Nilsson
Mar 6, 2018·Annals of Botany·Y WangA Stokes
Sep 15, 2018·Frontiers in Plant Science·Ludovica D'ImperioInger K Schmidt

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