Development and structure of resin glands on tissues of Betula pendula Roth. during growth

Seppo Lapinjoki, Heikki Elo, Hannu Taipale

Research output: Contribution to journalArticleScientificpeer-review

36 Citations (Scopus)

Abstract

Betula pendula Roth, and a number of other species of the genus are known to excrete resinous chemicals on juvenile shoots and twigs as deterrents against herbivores. The present studies show that the resin is produced by specific multi cellular glands that are of the same ontogenetic origin as the glands covering developing tissues in buds during winter dormancy. It was possible to deduce from observations over a season that the resin production may be regulated at two levels. Density of the glands on the shoot surface is determined at the time of tissue differentiation in the beginning of primary growth, and the excretory activity is related at least in part to gland size. Towards the end of the growth period the cores of glands were gradually filled with bark cells and the interior of the columnar excretory cells of their epidermis appeared pale and hollow instead of the dense blue in younger glands, when stained with haematoxylin. The excretion of resin by B. pendula appears to be a primary defence mechanism that is active during that part of the season, when apical growth of a juvenile shoot takes place.

Original languageEnglish
Pages (from-to)219 - 223
Number of pages5
JournalNew Phytologist
Volume117
Issue number2
DOIs
Publication statusPublished - 1991
MoE publication typeA1 Journal article-refereed

Fingerprint

Betula
Betula pendula
resins
shoots
Growth
Herbivory
Defense Mechanisms
Hematoxylin
epidermis (plant)
defense mechanisms
Epidermis
dormancy
bark
herbivores
excretion
buds
cells
winter
tissues

Cite this

Lapinjoki, Seppo ; Elo, Heikki ; Taipale, Hannu. / Development and structure of resin glands on tissues of Betula pendula Roth. during growth. In: New Phytologist. 1991 ; Vol. 117, No. 2. pp. 219 - 223.
@article{5e8f99208755416196e588e0636605ae,
title = "Development and structure of resin glands on tissues of Betula pendula Roth. during growth",
abstract = "Betula pendula Roth, and a number of other species of the genus are known to excrete resinous chemicals on juvenile shoots and twigs as deterrents against herbivores. The present studies show that the resin is produced by specific multi cellular glands that are of the same ontogenetic origin as the glands covering developing tissues in buds during winter dormancy. It was possible to deduce from observations over a season that the resin production may be regulated at two levels. Density of the glands on the shoot surface is determined at the time of tissue differentiation in the beginning of primary growth, and the excretory activity is related at least in part to gland size. Towards the end of the growth period the cores of glands were gradually filled with bark cells and the interior of the columnar excretory cells of their epidermis appeared pale and hollow instead of the dense blue in younger glands, when stained with haematoxylin. The excretion of resin by B. pendula appears to be a primary defence mechanism that is active during that part of the season, when apical growth of a juvenile shoot takes place.",
author = "Seppo Lapinjoki and Heikki Elo and Hannu Taipale",
year = "1991",
doi = "10.1111/j.1469-8137.1991.tb04902.x",
language = "English",
volume = "117",
pages = "219 -- 223",
journal = "New Phytologist",
issn = "0028-646X",
publisher = "Wiley",
number = "2",

}

Development and structure of resin glands on tissues of Betula pendula Roth. during growth. / Lapinjoki, Seppo; Elo, Heikki; Taipale, Hannu.

In: New Phytologist, Vol. 117, No. 2, 1991, p. 219 - 223.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Development and structure of resin glands on tissues of Betula pendula Roth. during growth

AU - Lapinjoki, Seppo

AU - Elo, Heikki

AU - Taipale, Hannu

PY - 1991

Y1 - 1991

N2 - Betula pendula Roth, and a number of other species of the genus are known to excrete resinous chemicals on juvenile shoots and twigs as deterrents against herbivores. The present studies show that the resin is produced by specific multi cellular glands that are of the same ontogenetic origin as the glands covering developing tissues in buds during winter dormancy. It was possible to deduce from observations over a season that the resin production may be regulated at two levels. Density of the glands on the shoot surface is determined at the time of tissue differentiation in the beginning of primary growth, and the excretory activity is related at least in part to gland size. Towards the end of the growth period the cores of glands were gradually filled with bark cells and the interior of the columnar excretory cells of their epidermis appeared pale and hollow instead of the dense blue in younger glands, when stained with haematoxylin. The excretion of resin by B. pendula appears to be a primary defence mechanism that is active during that part of the season, when apical growth of a juvenile shoot takes place.

AB - Betula pendula Roth, and a number of other species of the genus are known to excrete resinous chemicals on juvenile shoots and twigs as deterrents against herbivores. The present studies show that the resin is produced by specific multi cellular glands that are of the same ontogenetic origin as the glands covering developing tissues in buds during winter dormancy. It was possible to deduce from observations over a season that the resin production may be regulated at two levels. Density of the glands on the shoot surface is determined at the time of tissue differentiation in the beginning of primary growth, and the excretory activity is related at least in part to gland size. Towards the end of the growth period the cores of glands were gradually filled with bark cells and the interior of the columnar excretory cells of their epidermis appeared pale and hollow instead of the dense blue in younger glands, when stained with haematoxylin. The excretion of resin by B. pendula appears to be a primary defence mechanism that is active during that part of the season, when apical growth of a juvenile shoot takes place.

U2 - 10.1111/j.1469-8137.1991.tb04902.x

DO - 10.1111/j.1469-8137.1991.tb04902.x

M3 - Article

VL - 117

SP - 219

EP - 223

JO - New Phytologist

JF - New Phytologist

SN - 0028-646X

IS - 2

ER -