Pod and seed growth and development of narrow-leafed lupin in a water limited mediterranean-type environment

1996 ◽  
Vol 48 (2-3) ◽  
pp. 209-222 ◽  
Author(s):  
Miles Dracup ◽  
E.J.M. Kirby
2014 ◽  
Vol 42 (2) ◽  
pp. 358-363 ◽  
Author(s):  
Duarte D. Figueiredo ◽  
Claudia Köhler

The evolution of seeds was a major reason for the rise of angiosperms to ecological dominance. Seeds of angiosperms are composed of three main structures: the embryo, which will give rise to the next generation; the endosperm, a nurturing tissue whose main function is to deliver nutrients from the mother plant to the embryo; and the seed coat (or testa), a tissue that is derived from the maternal integuments and which provides support and protection to the growing embryo. All three seed components need to exchange signals to ensure co-ordinated growth and development. The present review discusses the structure of the seed coat, its interaction with the endosperm, and bidirectional signalling events between endosperm and seed coat that co-ordinate growth of both tissues. Angiosperm seeds are not only of evolutionary significance, but also of major agronomic importance, demanding a thorough understanding of the events governing seed growth and development.


1987 ◽  
Vol 84 (2) ◽  
pp. 298-303 ◽  
Author(s):  
Daniel J. Dyer ◽  
C. Daniel Cotterman ◽  
Josephine C. Cotterman

2006 ◽  
Vol 9 (6) ◽  
pp. 664-670 ◽  
Author(s):  
Frédéric Berger ◽  
Paul E Grini ◽  
Arp Schnittger

BMC Genomics ◽  
2018 ◽  
Vol 19 (1) ◽  
Author(s):  
Xian Liu ◽  
Zhen He ◽  
Yulai Yin ◽  
Xu Xu ◽  
Weiwen Wu ◽  
...  

Astrobiology ◽  
2014 ◽  
Vol 14 (10) ◽  
pp. 866-875 ◽  
Author(s):  
Bruce M. Link ◽  
James S. Busse ◽  
Bratislav Stankovic

Author(s):  
Randy Moore

Cell and tissue interactions are a basic aspect of eukaryotic growth and development. While cell-to-cell interactions involving recognition and incompatibility have been studied extensively in animals, there is no known antigen-antibody reaction in plants and the recognition mechanisms operating in plant grafts have been virtually neglected.An ultrastructural study of the Sedum telephoides/Solanum pennellii graft was undertaken to define possible mechanisms of plant graft incompatibility. Grafts were surgically dissected from greenhouse grown plants at various times over 1-4 weeks and prepared for EM employing variations in the standard fixation and embedding procedure. Stock and scion adhere within 6 days after grafting. Following progressive cell senescence in both Sedum and Solanum, the graft interface appears as a band of 8-11 crushed cells after 2 weeks (Fig. 1, I). Trapped between the buckled cell walls are densely staining cytoplasmic remnants and residual starch grains, an initial product of wound reactions in plants.


Author(s):  
Vicki L. Baliga ◽  
Mary Ellen Counts

Calcium is an important element in the growth and development of plants and one form of calcium is calcium oxalate. Calcium oxalate has been found in leaf seed, stem material plant tissue culture, fungi and lichen using one or more of the following methods—polarized light microscopy (PLM), scanning electron microscopy (SEM), transmission electron microscopy (TEM) and x-ray diffraction.Two methods are presented here for qualitatively estimating calcium oxalate in dried or fixed tobacco (Nicotiana) leaf from different stalk positions using PLM. SEM, coupled with energy dispersive x-ray spectrometry (EDS), and powder x-ray diffraction were used to verify that the crystals observed in the dried leaf with PLM were calcium oxalate.


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