Open AccessTrajectories of principal directions of growth, natural coordinate system in growing plant organ
Author(s) -
Z. Hejnowicz
Publication year - 2014
Publication title -
acta societatis botanicorum poloniae
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.297
H-Index - 29
eISSN - 2083-9480
pISSN - 0001-6977
DOI - 10.5586/asbp.1984.004
Subject(s) - coordinate system , eigenvalues and eigenvectors , principal component analysis , principal (computer security) , principal axis theorem , tensor (intrinsic definition) , isotropy , biology , point (geometry) , biological system , computer science , geometry , mathematics , physics , artificial intelligence , quantum mechanics , operating system
In symplasticly growing organs the principal directions of growth, which are indicated by the eigenvectors of the symmetric part of the growth tensor, can be associated with each positional point and joined up to form a network of orthogonal trajectories, unless the growth is isotropic. The trajectories represent a natural coordinate system suitable for description of growing organs. These trajectories often can be recognized in patterns of nonrandom alignments in the cell wall network: these alignments are normal to anticlinal and periclinal walls. Coordinate systems that fit the trajectories in different types of growing organ are listed