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- 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
-
http://dx.doi.org/10.1093/aob/mcl107
- 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
-
http://dx.doi.org/10.1093/aob/mcl118
- 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
-
http://dx.doi.org/10.1093/aob/mcl122
- 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
-
http://dx.doi.org/10.1093/aob/mcl109
- 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
-
http://dx.doi.org/10.1093/aob/mcl108
- 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
-
http://dx.doi.org/10.1093/aob/mcl111
- 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
-
http://dx.doi.org/10.1093/aob/mcl123
- 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
-
http://dx.doi.org/10.1093/aob/mcl104
- 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
-
http://dx.doi.org/10.1093/aob/mcl105
- 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
-
http://dx.doi.org/10.1093/aob/mcl121
- 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
-
http://dx.doi.org/10.1093/aob/mcl112
- 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
-
http://dx.doi.org/10.1093/aob/mcl106
- 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
-
http://dx.doi.org/10.1093/aob/mcl119
- 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
-
http://dx.doi.org/10.1093/aob/mcl113
- 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
-
http://dx.doi.org/10.1093/aob/mcl128
- 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
-
http://dx.doi.org/10.1093/aob/mcl110
- 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
-
http://dx.doi.org/10.1093/aob/mcl120
- 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
-
http://dx.doi.org/10.1093/aob/mcl117