Cellular endosperm formation in Phaseolus vulgaris. I. Light and scanning electron microscopy

1988 ◽  
Vol 66 (6) ◽  
pp. 1209-1216 ◽  
Author(s):  
Edward C. Yeung ◽  
Michael J. Cavey
Keyword(s):  
Phaseolus Vulgaris ◽  
Mitotic Activity ◽  
Endosperm Development ◽  
Bean Seed ◽  
Phaseolus Vulgaris L ◽  
Entire Surface ◽  
Cotyledon Stage ◽  
Cellular Endosperm ◽  
Inner Surface ◽  
Endosperm Formation

The formation of the endosperm in Phaseolus vulgaris L. conforms to the nuclear pattern of endosperm development. The endosperm is partially cellularized in the vicinity of the developing embryo, while the rest of the endosperm remains multinucleate. Mitotic activity of the endosperm is gradually confined to the region adjacent to the tips of the enlarging cotyledons. Continuing mitotic activity in this region results in the formation of cellular endosperm in the bean seed. At the cotyledon stage of embryo development, except in the region of the degenerating nucellus, the entire surface of the developing embryo is covered by a layer of cellular endosperm cells. Initially, the cellular endosperm is loosely attached to the inner surface of the seed coat. With the disappearance of the liquid endosperm, it becomes firmly attached. Further expansion of the seed results in the separation of cellular endosperm cells along their long axes. As the seed matures, the cellular endosperm dries, with no apparent degradation of its cells.

Microtubular configurations during endosperm development in Phaseolus vulgaris

1994 ◽  
Vol 72 (10) ◽  
pp. 1489-1495 ◽  
Author(s):  
X. XuHan ◽  
A. A. M. Van Lammeren
Keyword(s):  
Electron Microscopy ◽  
Cell Wall ◽  
Phaseolus Vulgaris ◽  
Key Words ◽  
Cell Walls ◽  
Endosperm Development ◽  
Initial Cell ◽  
Related Cell ◽  
Cellular Endosperm ◽  
Cell Shaping

Microtubular cytoskeletons in nuclear, alveolar, and cellular endosperm of bean (Phaseolus vulgaris) were analyzed immunocytochemically and by electron microscopy to reveal their function during cellularization. Nuclear endosperm showed a fine network of microtubules between the wide-spaced nuclei observed towards the chalazal pole. Near the embryo, where nuclei were densely packed, bundles of microtubules radiated from nuclei. They were formed just before alveolus formation and functioned in spacing nuclei and in forming internuclear, phragmoplast-like structures that gave rise to nonmitosis-related cell plates. During alveolus formation cell plates extended and fused with other newly formed walls, thus forming the walls of alveoli. Growing wall edges of cell plates exhibited arrays of microtubules perpendicular to the plane of the wall, initially. When two growing walls were about to fuse, microtubules of both walls interacted, and because of the interaction of microtubules, the cell walls changed their position. When a growing wall was about to fuse with an already existing wall, such interactions between microtubules were not observed. It is therefore concluded that interactions of microtubules of fusing walls influence shape and position of walls. Thus microtubules control the dynamics of cell wall positioning and initial cell shaping. Key words: cell wall, cellularization, endosperm, microtubule, Phaseolus vulgaris.

Pathway of Carbon Transport Within Developing Ovules of Phaseolus vulgaris L

1980 ◽  
Vol 7 (6) ◽  
pp. 671 ◽  
Author(s):  
JW Patrick ◽  
R Mcdonald
Keyword(s):  
Phaseolus Vulgaris ◽  
Seed Coat ◽  
Growth Rates ◽  
Free Space ◽  
Lateral Transfer ◽  
Diffusional Process ◽  
Phaseolus Vulgaris L ◽  
Inner Surface ◽  
Seed Coats ◽  
Carbon Transport

14C-labelled photosynthates, on reaching developing ovules of Phaseolus vulgaris plants, were transported rapidly and evenly throughout the highly vascularized seed coats. Apoplastic transfer of 14C-labelled photosynthates from the seed coats to the developing embryos occurred over the entire inner surface of the seed coats. Further lateral transfer of the photosynthate through the cotyledons exhibited characteristics consistent with a diffusional process. The 14C-labelled photosynthates transported from the seed coat to cotyledon symplasts were principally composed of sucrose. The free space of the cotyledons was fully permeated by photosynthates at concentrations in the range of 100-200 mM sucrose equivalents. This pool of photosynthates was continuously maintained by transfer from the seed coats. Furthermore, initial rates of depletion of the free-space pool of photosynthates, following removal of the seed coats, accounted for cotyledon growth rates. These observations are consistent with photosynthate movement being largely restricted to the apoplast of the cotyledons.

scholarly journals EVALUATION OF COLLECTION SAMPLES OF VEGETABLE BEANS (PHASEOLUS VULGARIS L.) FOR ECONOMICALLY VALUABLE GROUNDS IN THE CONDITIONS OF THE MOSCOW REGION

2018 ◽  
pp. 43-46 ◽  
Author(s):  
Sh. Anton ◽  
A. M. Smirnova ◽  
A. A. Antoshkin
Keyword(s):  
Phaseolus Vulgaris ◽  
Weather Conditions ◽  
Growing Season ◽  
Bean Seed ◽  
Phaseolus Vulgaris L ◽  
Green Beans ◽  
Processing Industry ◽  
Breeding Work ◽  
Initial Forms

As part of working on the solution of the task of importing asparagus beans, it is necessary to create a conveyor of green beans for vegetables during the growing season under the conditions of the Central Nonchernozem Zone (CNZ). In this regard, in 2018, work was continued on the evaluation of the existing collection of the FSBSI FSVC on economically valuable grounds, which allowed pre-select promising samples for further breeding work. According to the results of the assessment of the collection variety samples of vegetable beans in 2018, 30 variety samples of different groups of ripeness were identified as initial forms for breeding work on creating varieties that meet the requirements of the processing industry and creating a conveyor for producing asparagus products in the CNZ. Selected varieties are described and evaluated for the productivity of beans and seeds, suitability for mechanized harvesting, quality of the bean, seed size, resistance to the most harmful diseases. It is important to note that the year 2018 was unfavorable for the optimal development of culture due to the negative weather conditions that developed from the 3rd decade of May to the 2nd decade of June. This has made its own adjustments to the development of plants, as a result of which the assessment on some grounds is not indicative.

scholarly journals Variation in phytate accumulation in common bean (Phaseolus vulgaris L.) fruit explants

2008 ◽  
Vol 51 (1) ◽  
pp. 163-173 ◽  
Author(s):  
Cileide Maria Medeiros Coelho ◽  
Cláudia Mattos Bellato ◽  
Andréia Karime Marcelino Garcia ◽  
Victor Alexandre Vitorello ◽  
Ricardo Antunes Azevedo
Keyword(s):  
Abscisic Acid ◽  
Phaseolus Vulgaris ◽  
Common Bean ◽  
Bean Seed ◽  
Phaseolus Vulgaris L ◽  
In Vitro Synthesis ◽  
Fruit Explants

The in vitro synthesis of phytate was studied in common bean fruit explants. Different concentrations of sucrose; phosphorus (P); myo-inositol; abscisic acid (ABA); glutamine and methionine, were tested. Fixed concentrations of these compounds were tested at different periods (0, 3, 6 and 9 days). Variation in phytate coincided with different concentrations of sucrose, myo-inositol, P and ABA for the duration tested. These compounds caused an accumulation of phytate and were more effective in the presence of myo-inositol and P. The accumulation of P varied less than phytate for the different treatments tested in vitro. In conclusion, P, sucrose, ABA, and myo-inositol caused an increase in the phytate of bean seed, showing that it could be possible to alter its content by culturing bean fruit explants in vitro.

scholarly journals Occurrence, identification and phylogenetic analysis of Fusarium proliferatum on bean seed (Phaseolus vulgaris L.) in Serbia

2016 ◽  
Vol 53 (2) ◽  
pp. 42-45 ◽  
Author(s):  
Maja Ignjatov ◽  
Tatjana Popovic ◽  
Dragana Milosevic ◽  
Mirjana Vasic ◽  
Zorica Nikolic ◽  
...  
Keyword(s):  
Phylogenetic Analysis ◽  
Phaseolus Vulgaris ◽  
Fusarium Proliferatum ◽  
Bean Seed ◽  
Phaseolus Vulgaris L
Sign in / Sign up

Export Citation Format

Share Document