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Plant responses to brief touching: A mechanism for early neighbour detection?

Markovic, Dimitrije and Nikolic, Neda and Glinwood, Robert and Seisenbaeva, Gulaim and Ninkovic, Velemir (2016). Plant responses to brief touching: A mechanism for early neighbour detection? PloS one. 11:11, 1-19
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Official URL: http://journals.plos.org/plosone/article?id=10.137...

Abstract

In natural habitats plants can be exposed to brief and light contact with neighbouring plants. This mechanical stimulus may represent a cue that induces responses to nearby plants. However, little is known about the effect of touching on plant growth and interaction with insect herbivores. To simulate contact between plants, a soft brush was used to apply light and brief mechanical stimuli to terminal leaves of potato Solanum tuberosum L. The number of non-glandular trichomes on the leaf surface was counted on images made by light microscope while glandular trichomes and pavement cells were counted on images made under scanning electronic microscope. Volatile compounds were identified and quantified using coupled gas chromatography–mass spectrometry (GC-MS). Treated plants changed their pattern of biomass distribution; they had lower stem mass fraction and higher branch and leaf mass fraction than untouched plants. Size, weight and number of tubers were not significantly affected. Touching did not cause trichome damage nor change their total number on touched terminal leaves. However, on primary leaves the number of glandular trichomes and pavement cells was significantly increased. Touching altered the volatile emission of treated plants; they released higher quantities of the sesquiterpenes (E)-β-caryophyllene, germacrene D-4-ol and (E)-nerolidol, and lower quantities of the terpenes (E)-ocimene and linalool, indicating a systemic effect of the treatment. The odour of touched plants was significantly less preferred by the aphids Macrosiphum euphorbiae and Myzus persicae compared to odour of untouched plants. The results suggest that light contact may have a potential role in the detection of neighbouring plants and may affect plant-insect interactions.

Authors/Creators:Markovic, Dimitrije and Nikolic, Neda and Glinwood, Robert and Seisenbaeva, Gulaim and Ninkovic, Velemir
Title:Plant responses to brief touching: A mechanism for early neighbour detection?
Series/Journal:PloS one (1932-6203)
Year of publishing :2016
Volume:11
Number:11
Page range:1-19
Number of Pages:19
Publisher:PloS
Associated Programs and Other Stakeholders:SLU - Research Areas for the Future > Future Agriculture
ISSN:1932-6203
Language:English
Publication Type:Journal article
Refereed:Yes
Article category:Scientific peer reviewed
Version:Published version
Full Text Status:Public
Subjects:(A) Swedish standard research categories 2011 > 1 Natural sciences > 106 Biological Sciences (Medical to be 3 and Agricultural to be 4) > Botany
(A) Swedish standard research categories 2011 > 1 Natural sciences > 106 Biological Sciences (Medical to be 3 and Agricultural to be 4) > Ecology
(A) Swedish standard research categories 2011 > 1 Natural sciences > 106 Biological Sciences (Medical to be 3 and Agricultural to be 4) > Behavioural Sciences Biology
Agrovoc terms:defense mechanisms, plants, behavioural sciences
Keywords:leaves, potato, plant-herbivore interactions, aphids, pavement cells, plant-insect interactions
URN:NBN:urn:nbn:se:slu:epsilon-e-3839
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-e-3839
Additional ID:
Type of IDID
DOI10.1371/journal.pone.0165742
ID Code:13898
Faculty:NJ - Fakulteten för naturresurser och jordbruksvetenskap
Department:(NL, NJ) > Dept. of Crop Production Ecology
(NL, NJ) > Department of Chemistry and Biotechnology (140101-161231)
Deposited By: SLUpub Connector
Deposited On:20 Dec 2016 07:18
Metadata Last Modified:20 Dec 2016 07:18

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