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You searched for: Journal Annals of botany Remove constraint Journal: Annals of botany Publication Year 2006 Remove constraint Publication Year: 2006 Source 2006 v.98 no.2 Remove constraint Source: 2006 v.98 no.2
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1. Could Heat Shock Transcription Factors Function as Hydrogen Peroxide Sensors in Plants?

Author:
MILLER, GAD; MITTLER, RON
Source:
Annals of botany 2006 v.98 no.2 pp. 279-288
ISSN:
0305-7364
Subject:
tomatoes; transcription factors; plant stress; Arabidopsis; consensus sequence; hydrogen peroxide; stress response; heat stress; environmental factors; genes; plant response; oxidative stress
Abstract:
... BACKGROUND: Heat shock transcription factors (Hsfs) are modular transcription factors encoded by a large gene family in plants. They bind to the consensus sequence 'nGAAnnTCCn' found in the promoters of many defence genes, and are thought to function as a highly redundant and flexible gene network that controls the response of plants to different environmental stress conditions, including biotic a ...
DOI:
10.1093/aob/mcl107
PubMed:
16740587
PubMed Central:
PMC2803459

2. Dormancy and the Fire-centric Focus: Germination of Three Leucopogon Species (Ericaceae) from South-eastern Australia

Author:
OOI, MARK K. J.; AULD, TONY D.; WHELAN, ROBERT J.
Source:
Annals of botany 2006 v.98 no.2 pp. 421-430
ISSN:
0305-7364
Subject:
Ericaceae; dormancy breaking; fire break; fire testing; fires; habitats; heat treatment; permeability; phenology; seasonal variation; seed dormancy; seed germination; seedling emergence; seeds; smoke; temperature; Australia
Abstract:
... BACKGROUND: and Aims Germination studies of species from fire-prone habitats are often focused on the role that fire plays in breaking dormancy. However, for some plant groups in these habitats, such as the genus Leucopogon (Ericaceae), dormancy of fresh seeds is not broken by fire cues. In the field, these same species display a flush of seedling emergence post-fire. Dormancy and germination mech ...
DOI:
10.1093/aob/mcl118
PubMed:
16735409
PubMed Central:
PMC2803472

3. Effect of Root System Morphology on Root-sprouting and Shoot-rooting Abilities in 123 Plant Species from Eroded Lands in North-east Spain

Author:
GUERRERO-CAMPO, JOAQUÍN; PALACIO, SARA; PÉREZ-RONTOMÉ, CARMEN; MONTSERRAT-MARTÍ, GABRIEL
Source:
Annals of botany 2006 v.98 no.2 pp. 439-447
ISSN:
0305-7364
Subject:
life history; phylogeny; roots; shoots; tap roots; Spain
Abstract:
... BACKGROUND: and Aims The objective of this study was to test whether the mean values of several root morphological variables were related to the ability to develop root-borne shoots and/or shoot-borne roots in a wide range of vascular plants. METHODS: A comparative study was carried out on the 123 most common plant species from eroded lands in north-east Spain. After careful excavations in the fie ...
DOI:
10.1093/aob/mcl122
PubMed:
16790468
PubMed Central:
PMC2803465

4. Effects of Phosphorus and Nitrogen on Nodulation are Seen Already at the Stage of Early Cortical Cell Divisions in Alnus incana

Author:
GENTILI, FRANCESCO; WALL, LUIS G.; HUSS-DANELL, KERSTIN
Source:
Annals of botany 2006 v.98 no.2 pp. 309-315
ISSN:
0305-7364
Subject:
Alnus incana; Frankia; cell division; cortex; hosts; nitrogen; nodulation; phosphorus; plant response; pouches; root systems; seedlings
Abstract:
... BACKGROUND: and Aims The present work aimed to study early stages of nodulation in a chronological sequence and to study phosphorus and nitrogen effects on early stages of nodulation in Alnus incana infected by FRANKIA: A method was developed to quantify early nodulation stages in intact root systems in the root hair-infected actinorhizal plant A. incana. Plant tissue responses were followed every ...
DOI:
10.1093/aob/mcl109
PubMed:
16735402
PubMed Central:
PMC2803461

5. Effects of the Fungal Endophyte, Neotyphodium lolii, on Net Photosynthesis and Growth Rates of Perennial Ryegrass (Lolium perenne) are Independent of In Planta Endophyte Concentration

Author:
SPIERING, MARTIN J.; GREER, DENNIS H.; SCHMID, JAN
Source:
Annals of botany 2006 v.98 no.2 pp. 379-387
ISSN:
0305-7364
Subject:
grasses; plant growth; alkaloids; Epichloe festucae var. lolii; energy; tillering; gas exchange; Lolium perenne; hosts; photochemistry; transpiration; clones; genotype; Neotyphodium; photosynthesis; biomass; mycelium; leaves; fungi
Abstract:
... BACKGROUND: and Aims Neotyphodium lolii is a fungal endophyte of perennial ryegrass (Lolium perenne), improving grass fitness through production of bioactive alkaloids. Neotyphodium species can also affect growth and physiology of their host grasses (family Poaceae, sub-family Pooideae), but little is known about the mechanisms. This study examined the effect of N. lolii on net photosynthesis (Pn) ...
DOI:
10.1093/aob/mcl108
PubMed:
16735403
PubMed Central:
PMC2803460

6. Flowering Phenology and Wind-pollination Efficacy of Heterodichogamous Juglans mandshurica (Juglandaceae)

Author:
BAI, WEI-NING; ZENG, YAN-FEI; LIAO, WAN-JIN; ZHANG, DA-YONG
Source:
Annals of botany 2006 v.98 no.2 pp. 397-402
ISSN:
0305-7364
Subject:
Juglans; flowering; fruiting; longevity; outcrossing; phenology; pollen; protandry; protogyny; spring; trees; wind pollination
Abstract:
... BACKGROUND: and Aims Heterodichogamy differs from normal dichogamy, in that it involves two mating types (protogyny and protandry) that occur at a 1 : 1 ratio in a population. Flowering phases of the two mating types are synchronized and reciprocal, which was considered to ensure between-type outcrossing. This study aims to quantify the flowering pattern and pollination efficacy in Juglans mandshu ...
DOI:
10.1093/aob/mcl111
PubMed:
16735400
PubMed Central:
PMC2803462

7. Genetic Diversity and Geographic Differentiation in Tacca chantrieri (Taccaceae): an Autonomous Selfing Plant with Showy Floral Display

Author:
ZHANG, LING; LI, QING-JUN; LI, HONG-TAO; CHEN, JIN; LI, DE-ZHU
Source:
Annals of botany 2006 v.98 no.2 pp. 449-457
ISSN:
0305-7364
Subject:
temporal variation; interspecific variation; outcrossing; DNA; genetic background; selfing; inbreeding; genetic techniques and protocols; genetic variation; allozymes; Tacca; Thailand; China
Abstract:
... BACKGROUND: and Aims Despite considerable investment in elaborate floral displays, Tacca chantrieri populations are predominantly selfing. It is hypothesized that this species might possess considerable spatial or temporal variation in outcrossing rates among populations. To test this hypothesis, genetic variability and genetic differentiation within and among T. chantrieri populations were invest ...
DOI:
10.1093/aob/mcl123
PubMed:
16790462
PubMed Central:
PMC2803468

8. Histocytological Analysis of Callogenesis and Somatic Embryogenesis from Cell Suspensions of Date Palm (Phoenix dactylifera)

Author:
SANÉ, D.; ABERLENC-BERTOSSI, F.; GASSAMA-DIA, Y.K.; SAGNA, M.; TROUSLOT, M.F.; DUVAL, Y.; BORGEL, A.
Source:
Annals of botany 2006 v.98 no.2 pp. 301-308
ISSN:
0305-7364
Subject:
2,4-D; Phoenix dactylifera; agar; callus formation; cell suspension culture; chopping; cultivars; leaves; micropropagation; naphthaleneacetic acid; plant development; plantations; processing stages; proteins; seedlings; somatic cells; somatic embryogenesis; somatic embryos
Abstract:
... BACKGROUND: and Aims The date palm is a dioecious perennial species of the Arecaceae for which in vitro micropropagation is essential to ensure the renewal of palm plantations. This study presents a histocytological analysis of the traditional Mauritanian Amsekhsi cultivar beginning from the initial callogenesis and continuing up to the establishment of the cellular embryogenic cell suspensions. T ...
DOI:
10.1093/aob/mcl104
PubMed:
16740588
PubMed Central:
PMC2803457

9. Inbreeding Depression and Mixed Mating in Leptosiphon jepsonii: A Comparison of Three Populations

Author:
GOODWILLIE, CAROL; KNIGHT, MARY CATHERINE
Source:
Annals of botany 2006 v.98 no.2 pp. 351-360
ISSN:
0305-7364
Subject:
developmental stages; environmental impact; evolution; fruits; inbreeding depression; mating systems; outcrossing; ovules; pollen; progeny; seed abortion; seed set; selfing
Abstract:
... BACKGROUND: and Aims Inbreeding depression is thought to play a central role in the evolution and maintenance of cross-fertilization. Theory indicates that inbreeding depression can be purged with self-fertilization, resulting in positive feedback for the selection of selfing. Variation among populations of Leptosiphon jepsonii in the timing and rate of self-fertilization provides an opportunity t ...
DOI:
10.1093/aob/mcl105
PubMed:
16720632
PubMed Central:
PMC2803458

10. Oxalis debilis in China: Distribution of Flower Morphs, Sterile Pollen and Polyploidy

Author:
LUO, SHIXIAO; ZHANG, DIANXIANG; RENNER, SUSANNE S.
Source:
Annals of botany 2006 v.98 no.2 pp. 459-464
ISSN:
0305-7364
Subject:
Apoidea; Oxalis; asexual reproduction; chromosome number; chromosomes; cross pollination; herbaria; morphs; nectar; pollen; polyploidy; seed set; stigma; sugars; viability; Africa; China
Abstract:
... BACKGROUND: and Aims Oxalis debilis is a South American tristylous species that is currently naturalizing in China. Based on field observations and herbarium data a report is made on its pollination, morph frequencies, pollen viability, seed set and chromosome number. In addition, a new chromosome count for the species in Africa is provided. METHODS: Field observations were conducted in six provin ...
DOI:
10.1093/aob/mcl121
PubMed:
16735406
PubMed Central:
PMC2803464

11. Predicting Germination Response to Temperature. II. Three-dimensional Regression, Statistical Gridding and Iterative-probit Optimization Using Measured and Interpolated-subpopulation Data

Author:
Hardegree, S.P.; Winstral, A.H.
Source:
Annals of botany 2006 v.98 no.2 pp. 403
ISSN:
0305-7364
Subject:
Pseudoroegneria spicata; seed germination; temperature; regression analysis; probit analysis; optimization; models; accuracy; equations; Elymus lanceolatus; Poa secunda; Elymus elymoides
Abstract:
... BACKGROUND: and Aims Most current thermal-germination models are parameterized with subpopulation-specific rate data, interpolated from cumulative-germination-response curves. The purpose of this study was to evaluate the relative accuracy of three-dimensional models for predicting cumulative germination response to temperature. Three-dimensional models are relatively more efficient to implement t ...
Handle:
10113/10547
DOI:
10.1093/aob/mcl112
PubMed:
16735412
PubMed Central:
PMC2803456

12. Proteome Profiling of Populus euphratica Oliv. Upon Heat Stress

Author:
FERREIRA, SÍLVIA; HJERNØ, KARIN; LARSEN, MARTIN; WINGSLE, GUNNAR; LARSEN, PETER; FEY, STEPHEN; ROEPSTORFF, PETER; SALOMÉ PAIS, MARIA
Source:
Annals of botany 2006 v.98 no.2 pp. 361-377
ISSN:
0305-7364
Subject:
Populus; amino acids; biosynthesis; carbon; databases; deserts; desorption; electrolytes; electrons; forest ecosystems; heat; heat stress; homeostasis; lasers; leaves; lipids; membrane proteins; photosystem II; proteome; shelterbelts; sulfates; sulfur; temperature; thiamin; water stress; woody plants; China
Abstract:
... BACKGROUND: and Aims Populus euphratica is a light-demanding species ecologically characterized as a pioneer. It grows in shelter belts along riversides, being part of the natural desert forest ecosystems in China and Middle Eastern countries. It is able to survive extreme temperatures, drought and salt stress, marking itself out as an important plant species to study the mechanisms responsible fo ...
DOI:
10.1093/aob/mcl106
PubMed:
16740589
PubMed Central:
PMC2803470

13. Proximity-dependent Pollen Performance in Silene vulgaris

Author:
GLAETTLI, MÉLANIE; PESCATORE, LUCA; GOUDET, JÉRÔME
Source:
Annals of botany 2006 v.98 no.2 pp. 431-437
ISSN:
0305-7364
Subject:
Silene vulgaris; cross pollination; foraging; genetic markers; herbaceous plants; inbreeding; microsatellite repeats; pollen; pollinators; population structure; seed dispersal; self-pollination; selfing; Switzerland
Abstract:
... BACKGROUND: and Aims Pollen and seed dispersal in herbaceous insect-pollinated plants are often restricted, inducing strong population structure. To what extent this influences mating within and among patches is poorly understood. This study investigates the influence of population structure on pollen performance using controlled pollinations and genetic markers. METHODS: Population structure was ...
DOI:
10.1093/aob/mcl119
PubMed:
16735408
PubMed Central:
PMC2803469

14. QTL Analysis of Intraspecific Differences between Two Silene vulgaris Ecotypes

Author:
BRATTELER, MARTIN; BALTISBERGER, MATTHIAS; WIDMER, ALEX
Source:
Annals of botany 2006 v.98 no.2 pp. 411-419
ISSN:
0305-7364
Subject:
Silene vulgaris; crossing; ecotypes; evolution; genome; leaves; linkage groups; plant growth; quantitative trait loci; serpentine; serpentine soils; shoots
Abstract:
... BACKGROUND: and Aims Serpentine soils provide a highly selective substrate for plant colonization and growth and represent an ideal system for studying the evolution of plant-ecotypes. In the present study the aim was to identify the genetic architecture of morphological traits distinguishing serpentine and non-serpentine ecotypes of Silene vulgaris. METHODS: Using an F₂ mapping population derived ...
DOI:
10.1093/aob/mcl113
PubMed:
16757498
PubMed Central:
PMC2803471

15. Redox Regulatory Mechanisms in Cellular Stress Responses

Author:
FEDOROFF, NINA
Source:
Annals of botany 2006 v.98 no.2 pp. 289-300
ISSN:
0305-7364
Subject:
proteins; signal transduction; endoplasmic reticulum; oxidative stress; physiological response; reactive oxygen species; redox reactions; gene expression regulation; eukaryotic cells; prokaryotic cells; biochemical mechanisms; unfolded protein response
Abstract:
... BACKGROUND: Reactive oxygen species are produced in a highly localized and specific pattern in biological stress responses. The present review examines the redox regulatory aspects of a number of molecular stress response mechanisms in both prokaryotes and eukaryotes. Scope The present review provides examples representing both the cytoplasmic stress response, often studied as the heat shock respo ...
DOI:
10.1093/aob/mcl128
PubMed:
16790465
PubMed Central:
PMC2803466

16. Response of Rice (Oryza sativa) with Root Surface Iron Plaque Under Aluminium Stress

Author:
CHEN, RONG FU; SHEN, REN FANG; GU, PEI; DONG, XIAO YING; DU, CHANG WEN; MA, JIAN FENG
Source:
Annals of botany 2006 v.98 no.2 pp. 389-395
ISSN:
0305-7364
Subject:
Oryza sativa; aluminum; aquatic plants; citrates; grain crops; growth chambers; high performance liquid chromatography; ions; iron; nutrient solutions; physiological response; plant architecture; rice; root exudates; root tips; shoots
Abstract:
... BACKGROUND: and Aims Rice (Oryza sativa) is an aquatic plant with a characteristic of forming iron plaque on its root surfaces. It is considered to be the most Al-tolerant species among the cereal crops. The objective of this study was to determine the effects of root surface iron plaque on Al translocation, accumulation and the change of physiological responses under Al stress in rice in the pres ...
DOI:
10.1093/aob/mcl110
PubMed:
16735401
PubMed Central:
PMC2803463

17. Systematic Significance of Seed Morphology in Veronica (Plantaginaceae): A Phylogenetic Perspective

Author:
MUÑOZ-CENTENO, LUZ M.; ALBACH, DIRK C.; SÁNCHEZ-AGUDO, JOSE A.; MARTÍNEZ-ORTEGA, M. MONTSERRAT
Source:
Annals of botany 2006 v.98 no.2 pp. 335-350
ISSN:
0305-7364
Subject:
inflorescences; testa; Veronica; chromosome number; phylogeny; nuclear genome; Hebe; nucleotide sequences; parallel evolution; scanning electron microscopes
Abstract:
... BACKGROUND: and Aims A new infrageneric rearrangement for Veronica has been proposed based on the most recent evidence from DNA sequence data, morphological evidence, and biogeographical considerations. Looking for morphological synapomorphies for each monophyletic subgenus has been problematic, due to difficulties arising from widespread homoplasy (mainly parallel evolution). In an attempt to ove ...
DOI:
10.1093/aob/mcl120
PubMed:
16775194
PubMed Central:
PMC2803467

18. Threatened Pollination Systems in Native Flora of the Ogasawara (Bonin) Islands

Author:
ABE, TETSUTO
Source:
Annals of botany 2006 v.98 no.2 pp. 317-334
ISSN:
0305-7364
Subject:
moths; islands; shrubs; niches; introduced species; honey bees; pollinators; flowers; Apoidea; surveys; flora; trees; woody plants; color; indigenous species; carpenter bees; pollination; satellites; Japan
Abstract:
... BACKGROUND: and Aims Various alien species have been introduced to the Ogasawara Islands (Japan). A survey was made investigating whether the native pollination systems fit an 'island syndrome' (biasing the flora to dioecy, with subdued, inconspicuous flowers) and whether alien species have disrupted the native pollination network. METHODS: Flower visitors and floral traits were determined in the ...
DOI:
10.1093/aob/mcl117
PubMed:
16790463
PubMed Central:
PMC2803473