Sex and Regeneration

Abstract

Regeneration is usually regarded as a unique plant or some animal species process. In reality, regeneration is a ubiquitous process in all multicellular organisms. It ranges from response to wounding by healing the wounded tissue to whole body neoforming (remaking of the new body). In a larger context, regeneration is one facet of two reproduction schemes that dominate the evolution of life. Multicellular organisms can propagate their genes asexually or sexually. Here I present the view that the ability to regenerate tissue or whole-body regeneration is also determined by the sexual state of the multicellular organisms (from simple animals such as hydra and planaria to plants and complex animals). The above idea is manifested here by showing evidence that many organisms, organs, or tissues show inhibited or diminished regeneration capacity when in reproductive status compared to organs or tissues in nonreproductive conditions or by exposure to sex hormones.

Micropropagation from Inflorescence Nodal Segments of Phalaenopsis and Acclimatization of Plantlets Using Different Substrates

“…Some plant genotypes presented high recalcitrance to regeneration when flowering occurred [17], with recent studies pointing to a possible interface between the florigen mRNA and the inhibition of tissue/organ regeneration [18]. However, in plants, flowering development is divided into two main stages: flowering induction and the effective development of inflorescences and flowers.…”