論文 - 詳細
| RRC ID | 70684 |
|---|---|
| 著者 | Schoonderwoerd KM, Friedman WE. |
| タイトル | Interspecific morphological variation in Juglandoideae resting bud organization: a winter's tale? |
| ジャーナル | Ann Bot |
| Abstract |
BACKGROUND AND AIMS:Dormant resting buds are frequently regarded as static units, with protective cataphylls on the outside and embryonic foliage leaves on the inside. The developmental consequences of cataphyll insertion into the dynamic, cyclical, annually repeating sequence of leaf forms that a resting bud gives rise to have rarely been interrogated. To examine the connection between dormant structure and growing-season development, we compare the complete seasonal heteroblastic sequence of leaf forms of six species of temperate Juglandaceae with distinctly different vegetative resting bud structures. These include buds with cataphylls; buds without cataphylls; and buds with caducous cataphylls that are lost before the onset of winter. METHODS:In a common garden setting over a seven-month growing season, the dimensions of 2249 individual vegetative metamers were tracked from first exposure to abscission along the shoots of saplings and mature trees. The timing of metamer initiation within terminal buds was investigated using micro-CT scanning. Character state transitions of resting bud types were estimated using a phylogenetic tree of Juglandaceae. KEY RESULTS:The presence of cataphylls within a heteroblastic sequence is associated with a single cohort of foliage leaves that flush and abscise synchronously. This growing pattern is highly determinate, with next year's terminal-bud cataphylls already initiated before spring leaf out. In contrast, in sequences without cataphylls, shorter-lived foliage leaves appear and abscise in a staggered fashion. Despite these differences in leaf demography, all examined heteroblastic sequences produce a series of small, caducous leaf forms that precede terminal bud set. CONCLUSIONS:The ubiquity of caducous leaf forms in Juglandoideae may point to the importance of shoot tip protection far beyond the dormant season. In addition, the presence or absence of cataphylls in resting buds is indicative of distinct shoot ontogenetic patterns, and functional strategies, in summer. |
| 巻・号 | 129(6) |
| ページ | 679-696 |
| 公開日 | 2022-5-12 |
| DOI | 10.1093/aob/mcac050 |
| PII | 6564894 |
| PMID | 35390122 |
| PMC | PMC9113150 |
| MeSH | Humans Phylogeny Plant Leaves* / anatomy & histology Plant Shoots Seasons |
| IF | 4.005 |
| リソース情報 | |
| GBIF | Spermatophyte collection of Himeji City Science Museum Plant Specimen Database of Tama Forest Science Garden, Forestry and Forest Products Research Institute, Japan Plant specimens of Komatsu City Museum The 6-7th National Survey on the Natural Environment: Vegetation Survey Vascular Plant Specimens of Yamagata Prefectural Museum Plant Specimens collections of the Kyushu University Museum Vascular plants database of Atsugi City Museum Herbarium, University Archives and Collections, Fukushima University, Japan (FKSE) Herbarium Specimens of Museum of Nature and Human Activities, Hyogo Pref., Japan Spermatophyta collection of Museum of Natural and Environmental History, Shizuoka Ibaraki Nature Museum, Vascular Plants collection Vascular plant specimens of National Museum of Nature and Science (TNS) Plant Specimens of Kurashiki Museum of Natural History Herbarium Specimens of Tokushima Prefectural Museum, Japan Herbarium of Kitakyushu Museum of Natural History and Human History Spermatophyta specimens of Iwate Prefectural Museum Vascular Plants Collection of Sagamihara City Museum Plant specimens in the Museum of Nature and Human Activities, Hyogo Prefecture, Japan Plant specimens deposited in Osaka Museum of Natural History, Japan Vascular Plant Specimens of Kochi Prefectural Makino Botanical Garden Plant Specimens of The Shimane Nature Museum of Mt. Sanbe Vascular Plant Specimen database of Kanagawa Prefectural Museum of Natural History Vascular plant specimens of Nagano Environmental Conservation Research Institute, Nagano Prefecture Plant Observation Records of Japan Vascular plant specimens of Aomori City Forestry Museum Plant specimens of Toyota City Nature Sanctuary (from non-museum circle) Vascular plant specimens of Toyama Science Museum The 2-5th National Survey on the Natural Environment: Vegetation Survey |