Talking with Strangers: Improving <i>Serianthes</i> Transplant Quality with Interspecific Companions

Mixtures of species in natural or agricultural systems can increase the performance of individuals or groups relative to monocultures, often through facilitative mechanisms. Mechanisms include root communication by which plants can interrogate the identity of adjacent plants and respond negatively o...

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Main Authors: Thomas E. Marler, Ragan M. Callaway
Format: Article
Language:English
Published: MDPI AG 2021-09-01
Series:Forests
Subjects:
Online Access:https://www.mdpi.com/1999-4907/12/9/1192
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author Thomas E. Marler
Ragan M. Callaway
author_facet Thomas E. Marler
Ragan M. Callaway
author_sort Thomas E. Marler
collection DOAJ
description Mixtures of species in natural or agricultural systems can increase the performance of individuals or groups relative to monocultures, often through facilitative mechanisms. Mechanisms include root communication by which plants can interrogate the identity of adjacent plants and respond negatively or positively. Alternatively, mixtures of species can ameliorate the harmful effects of soil biota that are pronounced in monocultures, thereby improving plant productivity. Limited investments into roots by shade-grown <i>Serianthes</i> plants in nurseries have been correlated with reduced survival after transplantation to forested habitats. We used companion container cultures in two studies to determine if heterospecific neighbor, or “stranger” roots could experimentally increase the root growth of <i>Serianthes grandiflora</i> plants used as surrogates for the critically endangered <i>Serianthes nelsonii</i>. In one study, native sympatric eudicot and pteridophyte companions increased relative root growth and conspecific companions decreased root growth in comparison to control plants that were grown with no companions. In a second study, the phylogeny of companion plants elicited different root growth responses following the order of congeneric < eudicot = monocot < gymnosperm < pteridophyte. We propose the use of stranger roots that are experimentally maintained in production containers as a passive protocol to improve relative and absolute root growth, leading to improved post-transplant growth and survival of container-grown <i>Serianthes</i> plants.
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spelling doaj.art-116bc95d11aa40d28537129b32d634922023-11-22T13:07:27ZengMDPI AGForests1999-49072021-09-01129119210.3390/f12091192Talking with Strangers: Improving <i>Serianthes</i> Transplant Quality with Interspecific CompanionsThomas E. Marler0Ragan M. Callaway1Western Pacific Tropical Research Center, University of Guam, Mangilao, GU 96923, USADivision of Biological Sciences and the Institute on Ecosystems, University of Montana, Missoula, MT 59812, USAMixtures of species in natural or agricultural systems can increase the performance of individuals or groups relative to monocultures, often through facilitative mechanisms. Mechanisms include root communication by which plants can interrogate the identity of adjacent plants and respond negatively or positively. Alternatively, mixtures of species can ameliorate the harmful effects of soil biota that are pronounced in monocultures, thereby improving plant productivity. Limited investments into roots by shade-grown <i>Serianthes</i> plants in nurseries have been correlated with reduced survival after transplantation to forested habitats. We used companion container cultures in two studies to determine if heterospecific neighbor, or “stranger” roots could experimentally increase the root growth of <i>Serianthes grandiflora</i> plants used as surrogates for the critically endangered <i>Serianthes nelsonii</i>. In one study, native sympatric eudicot and pteridophyte companions increased relative root growth and conspecific companions decreased root growth in comparison to control plants that were grown with no companions. In a second study, the phylogeny of companion plants elicited different root growth responses following the order of congeneric < eudicot = monocot < gymnosperm < pteridophyte. We propose the use of stranger roots that are experimentally maintained in production containers as a passive protocol to improve relative and absolute root growth, leading to improved post-transplant growth and survival of container-grown <i>Serianthes</i> plants.https://www.mdpi.com/1999-4907/12/9/1192competitionconservation sciencekin recognition<i>Serianthes grandiflora</i><i>Serianthes kanehirae</i><i>Serianthes nelsonii</i>
spellingShingle Thomas E. Marler
Ragan M. Callaway
Talking with Strangers: Improving <i>Serianthes</i> Transplant Quality with Interspecific Companions
Forests
competition
conservation science
kin recognition
<i>Serianthes grandiflora</i>
<i>Serianthes kanehirae</i>
<i>Serianthes nelsonii</i>
title Talking with Strangers: Improving <i>Serianthes</i> Transplant Quality with Interspecific Companions
title_full Talking with Strangers: Improving <i>Serianthes</i> Transplant Quality with Interspecific Companions
title_fullStr Talking with Strangers: Improving <i>Serianthes</i> Transplant Quality with Interspecific Companions
title_full_unstemmed Talking with Strangers: Improving <i>Serianthes</i> Transplant Quality with Interspecific Companions
title_short Talking with Strangers: Improving <i>Serianthes</i> Transplant Quality with Interspecific Companions
title_sort talking with strangers improving i serianthes i transplant quality with interspecific companions
topic competition
conservation science
kin recognition
<i>Serianthes grandiflora</i>
<i>Serianthes kanehirae</i>
<i>Serianthes nelsonii</i>
url https://www.mdpi.com/1999-4907/12/9/1192
work_keys_str_mv AT thomasemarler talkingwithstrangersimprovingiserianthesitransplantqualitywithinterspecificcompanions
AT raganmcallaway talkingwithstrangersimprovingiserianthesitransplantqualitywithinterspecificcompanions