חיפוש מתקדם
תחביר
חפש...
הספר "אוצר וולקני"
אודות
תנאי שימוש
ניהול
קהילה:
אסיף מאגר המחקר החקלאי
פותח על ידי קלירמאש פתרונות בע"מ -
Photosynthetic activity during olive (Olea europaea) leaf development correlates with plastid biogenesis and Rubisco levels
Year:
2008
Source of publication :
Physiologia Plantarum
Authors :
אבידן, בנימין
;
.
אוסטרזצר, אורן
;
.
מני, יאיר
;
.
מעיין, ענבר
;
.
רטנר, קירה
;
.
שחק, יוספה
;
.
שייע, פליקס
;
.
Volume :
134
Co-Authors:

Maayan, I., Institute of Plant Sciences, Agricultural Research Organization, Volcani Center, Bet Dagan 50250, Israel
Shaya, F., Institute of Plant Sciences, Agricultural Research Organization, Volcani Center, Bet Dagan 50250, Israel
Ratner, K., Institute of Plant Sciences, Agricultural Research Organization, Volcani Center, Bet Dagan 50250, Israel
Mani, Y., Institute of Plant Sciences, Agricultural Research Organization, Volcani Center, Bet Dagan 50250, Israel
Lavee, S., Robert H. Smith Institute of Plant Sciences and Genetics in Agriculture, Hebrew University of Jerusalem, Rehovot 76100, Israel
Avidan, B., Institute of Plant Sciences, Agricultural Research Organization, Volcani Center, Bet Dagan 50250, Israel
Shahak, Y., Institute of Plant Sciences, Agricultural Research Organization, Volcani Center, Bet Dagan 50250, Israel
Ostersetzer-Biran, O., Institute of Plant Sciences, Agricultural Research Organization, Volcani Center, Bet Dagan 50250, Israel

Facilitators :
From page:
547
To page:
558
(
Total pages:
12
)
Abstract:
Olive leaves are known to mature slowly, reaching their maximum photosynthetic activity only after full leaf expansion. Poor assimilation rates, typical to young olive leaves, were previously associated with low stomata conductance. Yet, very little is known about chloroplast biogenesis throughout olive leaf development. Here, the photosynthetic activity and plastids development throughout leaf maturation is characterized by biochemical and ultrastructural analyses. Although demonstrated only low photosynthetic activity, the plastids found in young leaves accumulated both photosynthetic pigments and proteins required for photophosphorylation and carbon fixation. However, Rubisco (ribulose-1,5-bisphosphate carboxylase-oxygenase), which catalyzes the first major step of carbon fixation and one of the most abundant proteins in plants, could not be detected in the young leaves and only slowly accumulated throughout development. In fact, Rubisco levels seemed tightly correlated with the observed photosynthetic activities. Unlike Rubisco, numerous proteins accumulated in the young olive leaves. These included the early light induced proteins, which may be required to reduce the risk of photodamage, because of light absorption by photosynthetic pigments. Also, high levels of ribosomal L11 subunit, transcription factor elF-5A, Histones H2B and H4 were observed in the apical leaves, and in particular a plastidic-like aldolase, which accounted for approximately 30% of the total proteins. These proteins may upregulate in their levels to accommodate the high demand for metabolic energy in the young developing plant tissue, further demonstrating the complex sink-to-source relationship between young and photosynthetically active mature leaves. © Physiologia Plantarum 2008.
Note:
Related Files :
carotenoids
chlorophyll
Growth, Development and Aging
metabolism
molecular genetics
Olea europaea
photosynthesis
ultrastructure
עוד תגיות
תוכן קשור
More details
DOI :
10.1111/j.1399-3054.2008.01150.x
Article number:
0
Affiliations:
Database:
סקופוס
Publication Type:
מאמר
;
.
Language:
אנגלית
Editors' remarks:
ID:
27829
Last updated date:
02/03/2022 17:27
Creation date:
17/04/2018 00:34
You may also be interested in
Scientific Publication
Photosynthetic activity during olive (Olea europaea) leaf development correlates with plastid biogenesis and Rubisco levels
134

Maayan, I., Institute of Plant Sciences, Agricultural Research Organization, Volcani Center, Bet Dagan 50250, Israel
Shaya, F., Institute of Plant Sciences, Agricultural Research Organization, Volcani Center, Bet Dagan 50250, Israel
Ratner, K., Institute of Plant Sciences, Agricultural Research Organization, Volcani Center, Bet Dagan 50250, Israel
Mani, Y., Institute of Plant Sciences, Agricultural Research Organization, Volcani Center, Bet Dagan 50250, Israel
Lavee, S., Robert H. Smith Institute of Plant Sciences and Genetics in Agriculture, Hebrew University of Jerusalem, Rehovot 76100, Israel
Avidan, B., Institute of Plant Sciences, Agricultural Research Organization, Volcani Center, Bet Dagan 50250, Israel
Shahak, Y., Institute of Plant Sciences, Agricultural Research Organization, Volcani Center, Bet Dagan 50250, Israel
Ostersetzer-Biran, O., Institute of Plant Sciences, Agricultural Research Organization, Volcani Center, Bet Dagan 50250, Israel

Photosynthetic activity during olive (Olea europaea) leaf development correlates with plastid biogenesis and Rubisco levels
Olive leaves are known to mature slowly, reaching their maximum photosynthetic activity only after full leaf expansion. Poor assimilation rates, typical to young olive leaves, were previously associated with low stomata conductance. Yet, very little is known about chloroplast biogenesis throughout olive leaf development. Here, the photosynthetic activity and plastids development throughout leaf maturation is characterized by biochemical and ultrastructural analyses. Although demonstrated only low photosynthetic activity, the plastids found in young leaves accumulated both photosynthetic pigments and proteins required for photophosphorylation and carbon fixation. However, Rubisco (ribulose-1,5-bisphosphate carboxylase-oxygenase), which catalyzes the first major step of carbon fixation and one of the most abundant proteins in plants, could not be detected in the young leaves and only slowly accumulated throughout development. In fact, Rubisco levels seemed tightly correlated with the observed photosynthetic activities. Unlike Rubisco, numerous proteins accumulated in the young olive leaves. These included the early light induced proteins, which may be required to reduce the risk of photodamage, because of light absorption by photosynthetic pigments. Also, high levels of ribosomal L11 subunit, transcription factor elF-5A, Histones H2B and H4 were observed in the apical leaves, and in particular a plastidic-like aldolase, which accounted for approximately 30% of the total proteins. These proteins may upregulate in their levels to accommodate the high demand for metabolic energy in the young developing plant tissue, further demonstrating the complex sink-to-source relationship between young and photosynthetically active mature leaves. © Physiologia Plantarum 2008.
Scientific Publication
נגישות
menu      
You may also be interested in