These results confirm the suppose that a high GA level in the SAM being critical
for the decrease in meristematic activity and for conversion of vegetative meristem to
inflorescence meristem (Jasinski S. et al., 2005). Besides, accumulation of IAA and
low IAA/ABA ratio in the SAM being critical for transition to flowering of ND
soybean lines. This is probably due to the fact that auxin is critical for flowering process
as it defines the site of flower initiation, controls floral organ growth and patterning as
well as subsequent events determining reproductive fitness (Vanneste et al., 2009).
It is reported here that a plant hormonal balance in the leaves and SAM of soybean
isogenic lines depends on photoperiodic conditions and it is crucial in a regulation of
the transition to flowering. The E genes were shown to be involved in this process
through their role in plant hormone balance control.
BIBLIOGRAPHICAL REFERENCES
1.
Amasino R. (2010). Seasonal and developmental timing of flowering. The
Plant Journal, 61, 1001-1013. Retrieved from http://dx.doi.org/10.1111/j.1365-313X.
2010.04148.x.
2.
Andrés F. & Coupland G. (2012). The genetic basis of flowering responses to
seasonal cues. Nat. Rev. Genet., 13, 627–639. Retrieved from http://dx.doi.org/
10.1038/nrg3291.
3.
Blümel M., Dally N. & Jung C. (2015). Flowering time regulation in crops—
what did we learn from Arabidopsis? Current opinion in biotechnology, 32, 121-29.
Retrieved from http://dx.doi.org/10.1016/j.copbio.2014.11.023.
4.
Burgarella C., Chantret N., Gay L., Prosperi J-M., Bonhomme M., Tiffin P.,
et al. (2016). Adaptation to climate through flowering phenology: a case study in
Medicago
truncatula.
Molecular
Ecology,
25
(14).
Retrieved
from
http://dx.doi.org/10.1111/mec.13683.
5.
Kazan K. & Lyons R. (2016). The link between flowering time and stress
tolerance. J. Exp. Bot, 67, 47–60. Retrieved from http://dx.doi.org/10.1093/
jxb/erv441.
6.
Reeves PH. & Coupland G. (2001). Analysis of flowering time control in
Arabidopsis by comparison of double and triple mutants. Plant Physiology, 126, 1085-
1091. Retrieved from http://dx.doi.org/10.1104/pp.126.3.1085.
7.
Sun C., Chen D., Fang J., Wang P., Deng X. & Chu C. (2014). Understanding
the genetic and epigenetic architecture in complex network of rice flowering pathways.
Protein Cell, 5, 889-898. Retrieved from http://dx.doi.org/10.1007/ s13238-014-0068-
6.
8.
Santner A. & Estelle M. (2009). Recent advances and emerging trends in plant
hormone signalling. Nature, 459, 1071-1078. Retrieved from http://dx.doi.org/
10.1038/nature08122.
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