The annual Turnover of Resources in Young Olive Trees

Priestley, C. A.

doi:10.1080/00221589.1977.11514736

Cited by 34 publications

(18 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The soluble carbohydrate composition of leaf mesophyll of 0, europaea differs from that of other fruit tree species, in which sucrose and the sugar alcohol, sorbitol, are the main components (Loescher et al, 1982, IVIoing et al, 1992, Previous findings of Priestley (1977) and Drossopoulos and Niavis (1988) for olive leaves indicated that mannitol represented about 70% of total soltible carbohydrates, followed by sucrose (209^) and glucose (10%), These data are in contrast with those of Flora and Madore (1993) and with those presented here, which clearly indicate that glucose is the most abundant carbohydrate. Our results confirm the minor contribution of galactinol, fructose, myo-inositol, and the raffinose series sugars to the soluble carbohydrate pool in olive leaf mesophyll (Flora andMadore 1993, Romani et al, 1994), Verbascose, a penta-saccharide detected in very low concentrations by Flora and Madore (1993) was not detected with our analytical method because this sugar was eluted with the solvent peak (Romani et al, 1994).…”

Section: Discussionmentioning

confidence: 98%

Changes in non‐structural carbohydrates in olive (Olea europaea) leaves during root zone salinity stress

Tattini¹,

Gucci

Romani

et al. 1996

Physiologia Plantarum

View full text Add to dashboard Cite

Self‐rooted olive (Olea europaea L.) plants were grown in hydroponics at various NaCl concentrations (from 0 to 200mM) for 28 to 32 days followed by 28 to 30 days of relief from salinity over two growing seasons. Olive leaves accumulated both glucose and mannitol during the period of salinity stress. The concentrations of fructose, myo‐inositol, galactose, galactinol, sucrose, raffinose, and stachyose were not significantly affected by salinity. Starch content was decreased by salinity. The mannitol/glucose and mannitol/soluble carbohydrates ratios increased as the external NaCl concentration was increased, but returned to the control levels during the relief period. The increase in mannitol or glucose molar concentrations, expressed on a leaf tissue water basis, was partially due to a reduction in leaf tissue water content under salinity stress. However, an increase in mannitol concentration was also observed when expressed on a dry weight basis. The accumulation of mannitol in leaf tissue preceded any reduction in leaf area rate or net assimilation rate. The increase in leaf mannitol or glucose concentration was positively correlated with the increasing level of salinity at the root zone, but not with the accumulation of Na+ in the shoot. The role of mannitol. a potential osmoregulator in leaf mesophyll during salinity stress, is discussed in relation to the complex carbohydrate composition of olive leaves.

show abstract

Section: Discussionmentioning

confidence: 98%

Changes in non‐structural carbohydrates in olive (Olea europaea) leaves during root zone salinity stress

Tattini¹,

Gucci

Romani

et al. 1996

Physiologia Plantarum

View full text Add to dashboard Cite

show abstract

“…The olive tree, as an evergreen, has a permanent photosynthetic system that functions all year round and has a capacity for saccharide storage in the leaves late in winter (Priestley 1977). These characteristics make the leaves significant storage organs and therefore the effect of shade on leaf morphology, P N , and saccharide storage is very important for tree growth and production.…”

Section: Introductionmentioning

confidence: 99%

Effects of reduced irradiance on leaf morphology, photosynthetic capacity, and fruit yield in olive (Olea europaea L.)

2007

View full text Add to dashboard Cite

One-year-old olive trees (cv. Koroneiki) were grown in plastic containers of 50 000 cm 3 under full daylight and 30, 60, and 90 % shade for two years. The effects of shade on leaf morphology and anatomy, including stomatal density and chloroplast structure, net photosynthetic rate (P N ), stomatal conductance (g s ), and fruit yield were studied. Shade reduced leaf thickness due to the presence of only 1-2 palisade layers and reduced the length of palisade cells and spongy parenchyma. The number of thylakoids in grana as well as in stroma increased as shade increased, while the number of plastoglobuli decreased in proportion to the reduced photosynthetically active radiation (PAR). The higher the level of shade, the lower the stomatal and trichome density, leaf mass per area (ALM), g s , and P N . Shade of 30, 60, and 90 % reduced stomatal density by 7, 16, and 27 %, respectively, while the corresponding reduction in P N was 21, 35, and 67 %. In contrast, chlorophyll a+b per fresh mass, and leaf width, length, and particularly area increased under the same shade levels (by 16, 33, and 81 % in leaf area). P N reduction was due both to a decrease in PAR and to the morphological changes in leaves. The effect of shade was more severe on fruit yield per tree (32, 67, and 84 %) than on P N indicating an effect on bud differentiation and fruit set. The olive tree adapts well to shade compared with other fruit trees by a small reduction in stomatal and trichome density, palisade parenchyma, and a significant increase in leaf area.

show abstract

“…in a wetter period with diluted soil ionic composition [20] has been shown during cold acclimation [5]. This increase reflects an increase in symplastic viscosity as a result of increased intracellular sugar concentration [17] [21]. Moreover, the concentration of the osmotic solution affects ion movement and electric current flux while viscosity increases; this could explain why resistance and capacity increased when nutrient level increased from (0.1x) to (2x).…”

Section: Effects Of Nutrient Concentrations In the Root Medium On Impmentioning

confidence: 92%

Characterization of Short-Term Stress Applied to the Root System by Electrical Impedance Measurement in the First Leaf of Corn (<i>Zea mays</i> L.) and Pumpkin (<i>Cucurbita maxima</i> L.)

Laarabi¹

2014

AJPS

View full text Add to dashboard Cite

We applied electrical spectroscopic impedance measurements (ESI) to the first leaf of intact plants of corn and pumpkin. The electric capacity (C) and resistance (Rp) were determined at the characteristic frequency (FC). We observed that the electrical parameters of the ESI change in relation to the nutrition and the addition to the root medium of KCN, N,N'-dicyclohexylcar-bodiimide (DCCD), CH 3 COOH, H 2 SO 4 , polyethylene glycol 200 (PEG 200) and NaCl. The amplitude of the curves of bioimpedance spectrometry decreased when plant roots were stressed comparatively to their controls. An increase of the electrical capacity with a reduction of the electrical resistance characterizes a stress. The increase of stress intensity provokes decreases of Rp and curve amplitudes and an increase of C. We conclude that electrical parameters studied can be widely used for stress characterization.

show abstract

The annual Turnover of Resources in Young Olive Trees

Cited by 34 publications

References 0 publications

Changes in non‐structural carbohydrates in olive (Olea europaea) leaves during root zone salinity stress

Changes in non‐structural carbohydrates in olive (Olea europaea) leaves during root zone salinity stress

Effects of reduced irradiance on leaf morphology, photosynthetic capacity, and fruit yield in olive (Olea europaea L.)

Characterization of Short-Term Stress Applied to the Root System by Electrical Impedance Measurement in the First Leaf of Corn (<i>Zea mays</i> L.) and Pumpkin (<i>Cucurbita maxima</i> L.)

Contact Info

Product

Resources

About

The annual Turnover of Resources in Young Olive Trees

Cited by 34 publications

References 0 publications

Changes in non‐structural carbohydrates in olive (Olea europaea) leaves during root zone salinity stress

Changes in non‐structural carbohydrates in olive (Olea europaea) leaves during root zone salinity stress

Effects of reduced irradiance on leaf morphology, photosynthetic capacity, and fruit yield in olive (Olea europaea L.)

Characterization of Short-Term Stress Applied to the Root System by Electrical Impedance Measurement in the First Leaf of Corn (&lt;i&gt;Zea mays&lt;/i&gt; L.) and Pumpkin (&lt;i&gt;Cucurbita maxima&lt;/i&gt; L.)

Contact Info

Product

Resources

About

Characterization of Short-Term Stress Applied to the Root System by Electrical Impedance Measurement in the First Leaf of Corn (<i>Zea mays</i> L.) and Pumpkin (<i>Cucurbita maxima</i> L.)