Anatomy and photosystem II activity of in vitro grown Aechmea blanchetiana as affected by 1-naphthaleneacetic acid

Modulation of the anatomical and physiological responses of in vitro grown Alcantarea imperialis induced by NAA and residual effects of BAP

“…In in vitro culture of bromeliads, the supplementation of AUXs in the medium is also frequently reported (Martins et al, 2018a;Resende et al, 2016). For bromeliads, the employment of AUXs has been combined with CKs during in vitro multiplication or isolated during in vitro rooting (Faria et al, 2018;Martins et al, 2018a).…”

“…In in vitro culture of bromeliads, the supplementation of AUXs in the medium is also frequently reported (Martins et al, 2018a;Resende et al, 2016). For bromeliads, the employment of AUXs has been combined with CKs during in vitro multiplication or isolated during in vitro rooting (Faria et al, 2018;Martins et al, 2018a). The synergy between the endogenous and exogenous CKs and AUXs is the key for the metabolic activity and cell division, which are later involved in inducing the differentiation of competent cells to promote the growth of new adventitious shoots (Faria et al, 2018).…”

“…The synergy between the endogenous and exogenous CKs and AUXs is the key for the metabolic activity and cell division, which are later involved in inducing the differentiation of competent cells to promote the growth of new adventitious shoots (Faria et al, 2018). Although exogenous AUX, applied as an isolated PGR, is not often a limiting factor for in vitro rooting of bromeliads, it may have positive effects on their growth traits (Martins et al, 2018a;Viehmannova et al, 2016). In vitro rooting is an essential step in the vegetative propagation of economically important horticultural herbaceous and woody plant species (Mao et al, 2019).…”

“…Likewise, use of BAP during in vitro propagation of A. blanchetiana induced long-term physiological defects, even after 120 days without direct exposure to this CK (Martins et al, 2018b). In contrast, direct NAA exposure, applied as an isolated PGR during in vitro rooting, improved the anatomical and physiological quality of A. blanchetiana plants, as well as improving their growth rate after the ex vitro transfer (Martins et al, 2018a). Therefore, those studies brought some questions related to how the interaction of BAP and NAA, applied separately during the in vitro multiplication and rooting phases respectively, can influence the anatomical and physiological status of plants.…”

“…Anatomical studies can be used to assess the effect of in vitro conditions on the success of the transfer to ex vitro conditions (Martins et al, 2016;Martins et al, 2018aMartins et al, , 2018bFaria et al, 2018). Analyses of photosynthetic pigment content are also useful to verify the physiological status of plants (Martins et al, 2018b;Janečková et al, 2019).…”