Analysis of movement in primary maize roots |
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Authors: | Liyana Popova Andrea Russino Antonio Ascrizzi Barbara Mazzolai |
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Institution: | 1.Center for Micro-Biorobotics@SSSA,Istituto Italiano di Tecnologia (IIT),Pontedera,Italy;2.The BioRobotics Institute,Scuola Superiore Sant’Anna,Pontedera,Italy |
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Abstract: | Studying plant root kinematics is important for understanding certain aspects of root growth and movement, which are strictly
correlated in plants. However, there is little available data on autonomous movements in plant roots, such as nutations, and
the data that are available are poorly described. We investigated the autonomous movements during growth in primary maize
roots by estimating the main kinematic parameters of nutations (i.e., the period of duration and amplitude) and the growth
rate. The estimations of nutation parameters were performed by developing dedicated methods, which are based on the analysis
of root tip displacement and tip velocity. The data relative to the tip displacements were obtained using tip tracing software
developed by our team specifically for this purpose. The results confirmed that the nutational phenomenon covers the continuous
range of periods and amplitudes, with certain dominant period-amplitude types, which we clustered into three groups: i) amplitudes
less than 0.1 mm and 4–16 min periods, ii) amplitudes less than 0.1 mm and 20–120 min periods, and iii) amplitudes greater
than 0.1 mm and 24–120 min periods. |
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