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You searched for: Journal Annals of botany Remove constraint Journal: Annals of botany Publication Year 2007 Remove constraint Publication Year: 2007 Source 2007 v.99 no.2 Remove constraint Source: 2007 v.99 no.2
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1. A Chemically Induced New Pea (Pisum sativum) Mutant SGECdt with Increased Tolerance to, and Accumulation of, Cadmium

Author:
Tsyganov, Viktor E.; Belimov, Andrei A.; Borisov, Alexey Y.; Safronova, Vera I.; Georgi, Manfred; Dietz, Karl-Josef; Tikhonovich, Igor A.
Source:
Annals of botany 2007 v.99 no.2 pp. 227-237
ISSN:
0305-7364
Subject:
Pisum sativum; cadmium; chitinase; crops; glutathione; heavy metals; homeostasis; hydroponics; models; monogenic inheritance; mutagenesis; mutants; nutrient solutions; peas; peroxidase; phenotype; phytochelatins; plant adaptation; proline; roots; screening; seedlings; shoots; toxicity
Abstract:
... BACKGROUND AND AIMS: To date, there are no crop mutants described in the literature that display both Cd accumulation and tolerance. In the present study a unique pea (Pisum sativum) mutant SGECdt with increased Cd tolerance and accumulation was isolated and characterized. METHODS: Ethylmethane sulfonate mutagenesis of the pea line SGE was used to obtain the mutant. Screening for Cd-tolerant seedl ...
DOI:
10.1093/aob/mcl261
PubMed:
17259229
PubMed Central:
PMC2802999

2. Ammonium and Nitrate Uptake by the Floating Plant Landoltia punctata

Author:
Fang, Yun Ying; Babourina, Olga; Rengel, Zed; Yang, Xiao E.; Pu, Pei Min
Source:
Annals of botany 2007 v.99 no.2 pp. 365-370
ISSN:
0305-7364
Subject:
Lemnaceae; ammonium nitrate; biomass production; engineering; ions; nitrogen; nutrient uptake; roots; surface area; surface water; uptake mechanisms
Abstract:
... BACKGROUND AND AIMS: Plants from the family Lemnaceae are widely used in ecological engineering projects to purify wastewater and eutrophic water bodies. However, the biology of nutrient uptake mechanisms in plants of this family is still poorly understood. There is controversy over whether Lemnaceae roots are involved in nutrient uptake. No information is available on nitrogen (N) preferences and ...
DOI:
10.1093/aob/mcl264
PubMed:
17204539
PubMed Central:
PMC2803002

3. A Model Explaining Genotypic and Ontogenetic Variation of Leaf Photosynthetic Rate in Rice (Oryza sativa) Based on Leaf Nitrogen Content and Stomatal Conductance

Author:
Ohsumi, Akihiro; Hamasaki, Akihiro; Nakagawa, Hiroshi; Yoshida, Hiroe; Shiraiwa, Tatsuhiko; Horie, Takeshi
Source:
Annals of botany 2007 v.99 no.2 pp. 265-273
ISSN:
0305-7364
Subject:
Oryza sativa; developmental stages; field experimentation; genotype; leaves; models; nitrogen content; photosynthesis; plant development; rice; stomatal conductance
Abstract:
... BACKGROUNDS AND AIMS: Identification of physiological traits associated with leaf photosynthetic rate (Pn) is important for improving potential productivity of rice (Oryza sativa). The objectives of this study were to develop a model which can explain genotypic variation and ontogenetic change of Pn in rice under optimal conditions as a function of leaf nitrogen content per unit area (N) and stoma ...
DOI:
10.1093/aob/mcl253
PubMed:
17204541
PubMed Central:
PMC2802993

4. An Overview of the Biology of the Desiccation-tolerant Resurrection Plant Myrothamnus flabellifolia

Author:
Moore, John P.; Lindsey, George G.; Farrant, Jill M.; Brandt, Wolf F.
Source:
Annals of botany 2007 v.99 no.2 pp. 211-217
ISSN:
0305-7364
Subject:
Myrothamnus; drought tolerance; evolution; medicinal plants; phytogeography; plant ecology; polyphenols; traditional medicine; wood anatomy; woody plants; Southern Africa
Abstract:
... BACKGROUND: Myrothamnus flabellifolia is unique as the only woody resurrection plant. It is an important plant in southern Africa because of its widespread occurrence and usage in African medicine and traditional culture. Many reports have investigated facets of its biology and the mechanisms associated with its desiccation tolerance. SCOPE: The general biology of the woody resurrection plant Myro ...
DOI:
10.1093/aob/mcl269
PubMed:
17218343
PubMed Central:
PMC2803006

5. Corolla Herbivory, Pollination Success and Fruit Predation in Complex Flowers: An Experimental Study with Linaria lilacina (Scrophulariaceae)

Author:
Sánchez-Lafuente, Alfonso M.
Source:
Annals of botany 2007 v.99 no.2 pp. 355-364
ISSN:
0305-7364
Subject:
Linaria; Scrophulariaceae; corolla; evolution; fruiting; fruits; herbivores; plants; pollination; predation; predators; seeds
Abstract:
... BACKGROUND AND AIMS: Herbivory on floral structures has been postulated to influence the evolution of floral traits in some plant species, and may also be an important factor influencing the occurrence and outcome of subsequent biotic interactions related to floral display. In particular, corolla herbivory may affect structures differentially involved in flower selection by pollinators and fruit p ...
DOI:
10.1093/aob/mcl267
PubMed:
17204536
PubMed Central:
PMC2803005

6. Current-year and Subsequent-year Effects of Crop-load Manipulation and Epicormic-shoot Removal on Distribution of Long, Short and Epicormic Shoot Growth in Prunus persica

Author:
Gordon, D.; Dejong, T.M.
Source:
Annals of botany 2007 v.99 no.2 pp. 323-332
ISSN:
0305-7364
Subject:
Prunus persica; autumn; canopy; carbohydrates; crops; field experimentation; fruits; peaches; roots; shoots; sprouting; summer; trees; vegetative growth; California
Abstract:
... BACKGROUND AND AIMS: The distribution of canopy growth among different shoot types such as epicormic, long and short shoots is not well understood in the peach tree. In this experiment, the effects of crop load and early epicormic sprout removal on current and subsequent-year distribution of vegetative growth among epicormic, long and short shoots was investigated in Prunus persica. METHODS: Field ...
DOI:
10.1093/aob/mcl262
PubMed:
17218345
PubMed Central:
PMC2803000

7. Effect of Nitrogen Form and Root-zone pH on Growth and Nitrogen Uptake of Tea (Camellia sinensis) Plants

Author:
Ruan, Jianyun; Gerendás, Jóska; Härdter, Rolf; Sattelmacher, Burkhard
Source:
Annals of botany 2007 v.99 no.2 pp. 301-310
ISSN:
0305-7364
Subject:
Camellia sinensis; absorption; acid tolerance; acidity; biomass production; cations; enzyme activity; free amino acids; glucose; glutamate-ammonia ligase; leaves; nitrogen; nitrogen content; nutrition; pH; rhizosphere; root growth; roots; tea
Abstract:
... BACKGROUND AND AIMS: Tea (Camellia sinensis) is considered to be acid tolerant and prefers ammonium nutrition, but the interaction between root zone acidity and N form is not properly understood. The present study was performed to characterize their interaction with respect to growth and mineral nutrition. METHODS: Tea plants were hydroponically cultured with NH₄⁺, NO₃⁻ and NH₄⁺+NO₃⁻, at pH 4·0, 5 ...
DOI:
10.1093/aob/mcl258
PubMed:
17204540
PubMed Central:
PMC2802997

8. Effects of Kaolin Application on Light Absorption and Distribution, Radiation Use Efficiency and Photosynthesis of Almond and Walnut Canopies

Author:
Rosati, Adolfo; Metcalf, Samuel G.; Buchner, Richard P.; Fulton, Allan E.; Lampinen, Bruce D.
Source:
Annals of botany 2007 v.99 no.2 pp. 255-263
ISSN:
0305-7364
Subject:
Juglans regia; Prunus dulcis; absorption; almonds; canopy; kaolin; leaves; photosynthesis; photosynthetically active radiation; radiation use efficiency; walnuts
Abstract:
... BACKGROUND AND AIMS: Kaolin applied as a suspension to plant canopies forms a film on leaves that increases reflection and reduces absorption of light. Photosynthesis of individual leaves is decreased while the photosynthesis of the whole canopy remains unaffected or even increases. This may result from a better distribution of light within the canopy following kaolin application, but this explana ...
DOI:
10.1093/aob/mcl252
PubMed:
17138580
PubMed Central:
PMC2802992

9. Elevated Atmospheric CO₂ and Strain of Rhizobium Alter Freezing Tolerance and Cold-induced Molecular Changes in Alfalfa (Medicago sativa)

Author:
Bertrand, Annick; Prévost, Danielle; Bigras, Francine J.; Castonguay, Yves
Source:
Annals of botany 2007 v.99 no.2 pp. 275-284
ISSN:
0305-7364
Subject:
Medicago sativa; Rhizobium; alfalfa; chitinase; cold; cold tolerance; freezing; gene expression; genes; pathogenesis-related proteins; plant growth; raffinose; roots; stachyose; storage proteins; sucrose; temperature
Abstract:
... BACKGROUND AND AIMS: The objective of the study was to assess the impact of elevated CO₂ in interaction with rhizobial strains on freezing tolerance and cold-induced molecular changes in alfalfa. METHODS: Alfalfa inoculated with two different strains of rhizobium (A2 and NRG34) was grown and cold acclimated (2 weeks at 2 °C) under either 400 (ambient) or 800 μmol mol⁻¹ (elevated) CO₂. KEY RESULTS: ...
DOI:
10.1093/aob/mcl254
PubMed:
17218341
PubMed Central:
PMC2802994

10. Isolation and Characterization of a myo-inositol-1-phosphate Synthase Gene from Yellow Passion Fruit (Passiflora edulis f. flavicarpa) Expressed During Seed Development and Environmental Stress

Author:
Abreu, Emanuel F.M.; Aragão, Francisco J.L.
Source:
Annals of botany 2007 v.99 no.2 pp. 285-292
ISSN:
0305-7364
Subject:
Passiflora edulis f. flavicarpa; Southern blotting; auxins; biosynthesis; catalytic activity; cell walls; clones; cold stress; complementary DNA; developmental stages; gene expression regulation; genes; heat stress; leaves; myo-inositol; nucleotide sequences; ovules; phospholipids; phytic acid; plant response; pollen; pollination; reverse transcriptase polymerase chain reaction; seed development; seeds; stress response
Abstract:
... BACKGROUND AND AIMS: Myo-inositol-1L-phosphate synthase (MIPS) catalyses the conversion of D-glucose 6-phosphate to 1-L-myo-inositol-1-phosphate, the first and rate-limiting step in the biosynthesis of all inositol-containing compounds. Inositol phospholipids play a vital role in membrane trafficking and signalling pathways, auxin storage and transport, phytic acid biosynthesis, cell wall biosynth ...
DOI:
10.1093/aob/mcl256
PubMed:
17138579
PubMed Central:
PMC2802995

11. Mating System of Brazilian Oryza glumaepatula Populations Studied with Microsatellite Markers

Author:
Karasawa, Marines M.G.; Vencovsky, Roland; Silva, Cynthia M.; Zucchi, Maria I.; Oliveira, Giancarlo C.X.; Veasey, Elizabeth A.
Source:
Annals of botany 2007 v.99 no.2 pp. 245-253
ISSN:
0305-7364
Subject:
Oryza; alleles; computer software; conservation practices; family studies; genetic techniques and protocols; greenhouses; heterozygosity; inbreeding; loci; microsatellite repeats; models; outcrossing; polyacrylamide gel electrophoresis; selfing; silver; Brazil; Paraguay
Abstract:
... BACKGROUND AND AIMS: A knowledge of natural populations' breeding systems is important in order to implement in situ and ex situ management and conservation practices. Using microsatellite markers, three Oryza glumaepatula populations from Brazil were studied to determine the breeding system and genetic structure parameters of this species. METHODS: Each population represented by ten families with ...
DOI:
10.1093/aob/mcl248
PubMed:
17202184
PubMed Central:
PMC2802991

12. Mutual Regulation of Arabidopsis thaliana Ethylene-responsive Element Binding Protein and a Plant Floral Homeotic Gene, APETALA2

Author:
Ogawa, Taro; Uchimiya, Hirofumi; Kawai-Yamada, Maki
Source:
Annals of botany 2007 v.99 no.2 pp. 239-244
ISSN:
0305-7364
Subject:
Arabidopsis thaliana; Northern blotting; binding proteins; ethylene; gene expression; homeotic genes; leaves; mutants; plant proteins; stamens; stress tolerance; transfer DNA; transgenic plants
Abstract:
... BACKGROUND AND AIMS: It has previously been shown that Arabidopsis thaliana ethylene-responsive element binding protein (AtEBP) contributed to resistance to abiotic stresses. Interestingly, it has also been reported that expression of ethylene-responsive factor (ERF) genes including AtEBP were regulated by the activity of APETALA2 (AP2), a floral homeotic factor. AP2 is known to regulate expressio ...
DOI:
10.1093/aob/mcl265
PubMed:
17204538
PubMed Central:
PMC2803001

13. Phylogenetic Origins of the Himalayan Endemic Dolomiaea, Diplazoptilon and Xanthopappus (Asteraceae: Cardueae) Based on Three DNA Regions

Author:
Wang, Yu-Jin; Liu, Jian-Quan; Miehe, Georg
Source:
Annals of botany 2007 v.99 no.2 pp. 311-322
ISSN:
0305-7364
Subject:
Carduus; Jurinea; Onopordum; Saussurea costus; internal transcribed spacers; phylogeny; probability analysis; ribosomal DNA; sisters
Abstract:
... BACKGROUND AND AIMS: It is an enduring question as to the mechanisms leading to the high diversity and the processes producing endemics with unusual morphologies in the Himalayan alpine region. In the present study, the phylogenetic relationships and origins of three such endemic genera were analysed, Dolomiaea, Diplazoptilon and Xanthopappus, all in the tribe Cardueae of Asteraceae. METHODS: The ...
DOI:
10.1093/aob/mcl259
PubMed:
17218340
PubMed Central:
PMC2802998

14. Plants Living on Gypsum: Beyond the Specialist Model

Author:
Palacio, Sara; Escudero, Adrián; Montserrat-Martí, Gabriel; Maestro, Melchor; Milla, Rubén; Albert, MarÍa J.
Source:
Annals of botany 2007 v.99 no.2 pp. 333-343
ISSN:
0305-7364
Subject:
chemical analysis; chemical composition; gypsum; habitats; leaves; models; soil
Abstract:
... BACKGROUND AND AIMS: Plants from gypsum habitats are classified as gypsophiles and gypsovags. The former include both narrow endemics limited to small gypsum areas and regionally dominant gypsophiles growing in gypsum areas of large regions, whereas gypsovags are plants that can grow both in gypsum and non-gypsum soils. Factors controlling the distribution of gypsum plants are still not fully unde ...
DOI:
10.1093/aob/mcl263
PubMed:
17204537
PubMed Central:
PMC2802996

15. Regulation of Summer Dormancy by Water Deficit and ABA in Poa bulbosa Ecotypes

Author:
Ofir, Micha; Kigel, Jaime
Source:
Annals of botany 2007 v.99 no.2 pp. 293-299
ISSN:
0305-7364
Subject:
Poa bulbosa; abscisic acid; bulbs; dormancy; drought; ecotypes; grasses; habitats; immunoassays; photoperiod; soil water deficit; sprouting; summer; temperature; water stress; winter
Abstract:
... BACKGROUND AND AIMS: Survival of many herbaceous species in Mediterranean habitats during the dry, hot summer depends on the induction of summer dormancy by changes in environmental conditions during the transition between the winter (growth) season to the summer (resting) season, i.e. longer days, increasing temperature and drought. In Poa bulbosa, a perennial geophytic grass, summer dormancy is ...
DOI:
10.1093/aob/mcl257
PubMed:
17202183
PubMed Central:
PMC2802989

16. Stomatal Patchiness and Task-performing Networks

Author:
Mott, Keith A.; Peak, David
Source:
Annals of botany 2007 v.99 no.2 pp. 219-226
ISSN:
0305-7364
Subject:
gas exchange; problem solving; statistical analysis; stomata; stomatal conductance; water use efficiency
Abstract:
... BACKGROUND: Patchy stomatal conductance is a poorly understood and little-studied phenomenon. It is relatively common, yet it appears to be detrimental to water-use efficiency under some conditions and has no immediately obvious physiological function of any kind. Much of the difficulty in studying patchy stomatal conductance is tied to its unpredictability, both in occurrence and in characteristi ...
DOI:
10.1093/aob/mcl234
PubMed:
17085471
PubMed Central:
PMC2802990

17. Total and Component Carbon Fluxes of a Scots Pine Ecosystem from Chamber Measurements and Eddy Covariance

Author:
Zha, Tianshan; Xing, Zisheng; Wang, Kai-Yun; Kellomäki, Seppo; Barr, Alan G.
Source:
Annals of botany 2007 v.99 no.2 pp. 345-353
ISSN:
0305-7364
Subject:
Pinus sylvestris; branches; carbon; climate change; ecosystem respiration; ecosystems; eddy covariance; growing season; net ecosystem production; overstory; photosynthesis; primary productivity; soil; soil respiration; temperature
Abstract:
... BACKGROUND AND AIMS: Distinguishing between, and quantifying, the different components of ecosystem C fluxes is critical in predicting the responses of ecosystem C cycling to climate change. The aims of this study were to quantify the photosynthetic and respiratory fluxes of a 50-year-old Scots pine (Pinus sylvestris) ecosystem, and to distinguish respiration of branches with needles from that of ...
DOI:
10.1093/aob/mcl266
PubMed:
17218344
PubMed Central:
PMC2803003