Functional Plant Biology
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Changes in photosynthesis and carbohydrate metabolism in sugarcane during the development of Yellow Canopy SyndromePhotosynthesis, stomatal conductance, electron transport, internal CO2 and sugar levels were determined in the leaves of Yellow Canopy Syndrome (YCS) symptomatic sugarcane (Saccharum spp.) plants. Two varieties from two different geographic regions in Australia, KQ228 and Q200 were used. Although visual yellowing was only evident in the lower leaves of the canopy (older than Leaf 5), photo... ... hiện toàn bộ
Functional Plant Biology - Tập 43 Số 6 - Trang 523 - 2016
Effects of Low Water Potentials on Transpiration and Photosynthesis in Mitchell Grass (Astrebla lappacea)Gas-exchange studies were carried out on potted Mitchell grass plants raised in the glasshouse and in growth cabinets. Provided that nutrition was adequate, the low irradiance of the growth cabinets did not impair the photosynthetic capacity at levels approaching full sunlight. The optimum temperature for net photosynthesis was in excess of 40�C. Close linear relationships were established... ... hiện toàn bộ
Functional Plant Biology - Tập 1 Số 4 - Trang 539 - 1974
Photosynthesis is strongly reduced by antisense suppression of chloroplastic cytochrome bf complex in transgenic tobacco
We have used transgenic tobacco (Nicotiana tabacum L.
cv. W38) plants expressing an antisense gene directed against the transcript
of the Rieske FeS protein of the chloroplast bf complex
to examine the effect a reduction in chloroplast Rieske FeS content on leaf
gas exchange and photosynthetic metabolite pools. Plants with chloroplast
Rieske FeS protein content ranging from 5 to 80% of wi... ... hiện toàn bộ
Functional Plant Biology - Tập 25 Số 4 - Trang 445 - 1998
Subdivision of C4-Pathway Species Based on Differing C4 Acid Decarboxylating Systems and Ultrastructural FeaturesA selection of C4 species was surveyed to determine the relationship between their content of C4 acid decarboxylating enzymes, the activities of several other enzymes implicated in the C4 pathway, and their anatomical and ultrastructural features. The species examined clearly fell into three groups according to whether they contained high levels of either NADP malic enzyme (EC 1.1.1.40), p... ... hiện toàn bộ
Functional Plant Biology - Tập 2 Số 2 - Trang 111 - 1975
On the Relationship Between Carbon Isotope Discrimination and the Intercellular Carbon Dioxide Concentration in LeavesTheory is developed to explain the carbon isotopic composition of plants. It is shown how diffusion of gaseous CO2 can significantly affect carbon isotopic discrimination. The effects on discrimination by diffusion and carboxylation are integrated, yielding a simple relationship between discrimination and the ratio of the intercellular and atmospheric partial pressures of CO2. The effects ... ... hiện toàn bộ
Functional Plant Biology - Tập 9 Số 2 - Trang 121 - 1982
Retrotransposon-based molecular markers for assessment of genomic diversityRetrotransposons (RTs) are major components of most eukaryotic genomes. They are ubiquitous, dispersed throughout the genome, and their abundance correlates with genome size. Their copy-and-paste lifestyle in the genome consists of three molecular steps involving transcription of an RNA copy from the genomic RT, followed by reverse transcription to generate cDNA, and finally, reintegration... ... hiện toàn bộ
Functional Plant Biology - Tập 41 Số 8 - Trang 781 - 2014
Insights into the consequences of grana stacking of thylakoid membranes in vascular plants: a personal perspective
The striking structural architecture of thylakoid membranes of higher plant
and some green algal chloroplasts that house the light harvesting and energy
transducing functions of chloroplasts have evoked many hypotheses concerning
the significance of grana. The differentiation of the thylakoids into grana
and stroma membrane regions is a morphological reflection of the non-random
distribut... ... hiện toàn bộ
Functional Plant Biology - Tập 26 Số 7 - Trang 625 - 1999
Thylakoid Membrane Organisation in Sun/Shade AcclimationThe photosynthetic apparatus of plants responds to changing light quantity and quality with coordinated changes in both the light-harvesting antennae of the photosystems and the amounts of electron transport components and ATP synthase. These compositional modulations are accompanied by changes in thylakoid membrane organisation and photosynthetic capacity. It is now clear that there is a ... ... hiện toàn bộ
Functional Plant Biology - Tập 15 Số 2 - Trang 11 - 1988
Partial rootzone drying and deficit irrigation increase stomatal sensitivity to vapour pressure deficit in anisohydric grapevinesThe aim of this study was to investigate how alternative irrigation strategies affected grapevine (Vitis vinifera L.) stomatal response to atmospheric vapour pressure deficit (VPD). In two sites, application of partial rootzone drying (PRD) at 90–100% of crop evapotranspiration (ETc) increased stomatal sensitivity of Shiraz (Syrah) grapevines to high VPD compared with control vines irrigat... ... hiện toàn bộ
Functional Plant Biology - Tập 37 Số 2 - Trang 128 - 2010
Soil moisture heterogeneity during deficit irrigation alters root-to-shoot signalling of abscisic acid
The effects of different irrigation techniques on leaf xylem ABA concentration ([X-ABA]leaf) were compared in tomato (Lycopersicon esculentum Mill.). During partial rootzone drying (PRD), water was distributed unevenly to the root system such that part was irrigated while the remainder was allowed to dry the soil. During conventional deficit irrigation (DI), plants received the same volu... ... hiện toàn bộ
Functional Plant Biology - Tập 34 Số 5 - Trang 439 - 2007
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