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Silicious trichomes as a trait that may slow down leaf decomposition by soil meso- and macrofauna

Plant and soil, 2022-02, Vol.471 (1-2), p.289-299 [Peer Reviewed Journal]

The Author(s), under exclusive licence to Springer Nature Switzerland AG 2021 ;COPYRIGHT 2022 Springer ;The Author(s), under exclusive licence to Springer Nature Switzerland AG 2021. ;ISSN: 0032-079X ;EISSN: 1573-5036 ;DOI: 10.1007/s11104-021-05223-1

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  • Title:
    Silicious trichomes as a trait that may slow down leaf decomposition by soil meso- and macrofauna
  • Author: Nakamura, Ryosuke ; Amada, Gaku ; Kajino, Hirofumi ; Morisato, Kei ; Kanamori, Kazuyoshi ; Hasegawa, Motohiro
  • Subjects: Agriculture ; Analysis ; Ashes ; Biodegradation ; Biomedical and Life Sciences ; Broussonetia papyrifera ; Decomposition ; Ecology ; Experiments ; Leaves ; Life Sciences ; Macrofauna ; Palatability ; Plant Physiology ; Plant Sciences ; Plant species ; Plant-soil relationships ; Regular Article ; Soil Science & Conservation ; Soils ; Trichomes
  • Is Part Of: Plant and soil, 2022-02, Vol.471 (1-2), p.289-299
  • Description: Aims This study explored a possibility that leaf silicious trichomes slow down leaf mass loss by soil meso- and macrofauna. Methods We focused on closely related Moraceae tree species ( Broussonetia papyrifera and Morus australis ) with different leaf trichome densities. First, we conducted microscopic analyses of leaf trichomes and investigated nine other leaf traits. We then performed a 25-day decomposition experiment with bags of different mesh sizes that excluded and included meso- and macrofauna. A cafeteria experiment was also implemented to examine palatability of leaf powder (i.e. trichome effects removed) to the most abundant macrofauna ( Armadillidium vulgare ) in our decomposition site. Results Broussonetia papyrifera exhibited a 150-fold higher silicious trichome density on the lower leaf surface than M. australis . The carbon-to-nitrogen ratio was significantly lower in B. papyrifera than M. australis . In decomposition, the ash-free mass loss of B. papyrifera was significantly higher than that of M. australis in the <0.2-mm mesh bag. Similarly, in the cafeteria experiment with A. vulgare , mass loss of B. papyrifera leaf powder was significantly higher than that of M. australis . In the 5-mm mesh bag, however, the ash-free mass loss of B. papyrifera was significantly lower than that of M. australis . Conclusions Despite rich nutrient quality of B. papyrifera leaves, leaf decomposition of B. papyrifera with greater trichome densities was slower than that of M. australis only in the 5-mm mesh bag that permitted the entry of meso- and macrofauna. This suggests a suppressive effect of leaf silicious trichomes on decomposition by the large decomposers.
  • Publisher: Cham: Springer International Publishing
  • Language: English
  • Identifier: ISSN: 0032-079X
    EISSN: 1573-5036
    DOI: 10.1007/s11104-021-05223-1
  • Source: AUTh Library subscriptions: ProQuest Central
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