Definition of basipetal in US English:

basipetal

adjective

Botany
  • 1(of growth or development) downward toward the base or point of attachment.

    The opposite of acropetal
    • ‘Alterations of the actin cytoskeleton and arrest of cytoplasmic streaming induced by the SI reaction are propagated in a basipetal direction in the tubular cell.’
    • ‘Lateral view of young inflorescence with basipetal initiation of flowers in the axil of bracts.’
    • ‘Expression of the DXR gene in adaxial phloem parenchyma cells was more pronounced in the young revoluted base of the leaves with a basipetal gradient decreasing toward the tips of older leaves.’
    • ‘We also show that cellular responses are propagated in a basipetal direction in P. rhoeas pollen tubes.’
    • ‘Ellipsoidal microconidia and falcate macroconidia are formed from phialides by basipetal division; globose chlamydospores with thick walls are formed acrogenously from hyphae or by the modification of hyphal cells.’
    1. 1.1 (of the movement of dissolved substances) inward from the shoot and root apexes.
      • ‘In the apical area 10-20 m from the apex, movement of the larger organelles slowed down slightly, before they were transported back in a basipetal direction resuming the same speed as before.’
      • ‘However, a continuous basipetal transport of auxin from the shoot to the rooting zone (upper part taproot) is required for adventious root formation.’
      • ‘From there they will flow to other parts of the shoot in both basipetal and acropetal directions.’
      • ‘In every case, the basipetal movement was greater than the acropetal movement.’
      • ‘Furthermore, in both animals and plants, gradients of growth factors are established, in plants by basipetal auxin transport, inducing and controlling vascular differentiation.’

Origin

Mid 19th century: from basis + Latin petere ‘seek’ + -al.

Pronunciation

basipetal

/bāˈsipədl/