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Journal of Integrative Agriculture 2018年第10期17卷 2273-2280页

作者： WEI Kang WANG Li-yuan RUAN Li ZHANG Cheng-cai WU Li-yun LI Hai-lin CHENG Hao Key Laboratory of Tea Biology and Resources Utilization Ministry of Agriculture National Center for Tea Improvement Tea Research Institute Chinese Academy of Agricultural Sciences(TRICAAS)

Nitric oxide（NO）and hydrogen peroxide（H2O2）are essential signaling molecules with key roles in auxin induced adventitious root formation in many ***,whether they are the sole determinants for adventitious root formation is worth further *** this study,endogenous NO and H2O2 were monitored in tea cutting with or without indole-3-butyric acid（IBA）treatment by using the fluorescent probes diaminofluorescein diacetate（DAF-2DA）and 2＇,7＇-dichlorodihydrofluorescein diacetate（DCF-DA）,*** overproduction of NO and H2O2 was detected in the rooting parts of tea cuttings treated with or without *** little NO and H2O2 was detected before the initiation phase of tea cuttings even with IBA treatment indicating that they might be not directly induced by *** carbon and nitrogen analysis found that the overproduction of NO and H2O2 were coincident with the consumption of soluble sugars and the assimilation of *** results suggest that rooting phases should be taken into consideration with the hypothesis that auxin induces adventitious root formation via NO-and H2O2-dependent pathways and sink establishment might be a prerequisite for NO and H2O2 mediated adventitious root formation.

关键词： nitric oxide hydrogen peroxide indole-3-butyric acid tea cuttings

Transport and Metabolism of the Endogenous Auxin Precursor indole-3-butyric acid

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Molecular Plant 2011年第3期4卷 477-486页

作者： Lucia C. Strader Bonnie Bartel Department of Biochemistry and Cell Biology Rice University Houston TX 77005 USA

Plant growth and morphogenesis depend on the levels and distribution of the plant hormone auxin. Plants tightly regulate cellular levels of the active auxin indole-3-acetic acid （IAA） through synthesis, inactivation, and transport. Although the transporters that move IAA into and out of cells are well characterized and play important roles in devel- opment, little is known about the transport of IAA precursors. In this review, we discuss the accumulating evidence sug- gesting that the IAA precursor indole-3-butyric acid （IBA） is transported independently of the characterized IAA transport machinery along with the recent identification of specific IBA efflux carriers and enzymes suggested to metabolize IBA. These studies have revealed important roles for IBA in maintaining IAA levels and distribution within the plant to support normal development.

关键词： Auxin auxin transport indole-3-butyric acid IBA.

In VitroClonal Propagation from Adult Material of a Savannah Species of Socio-Economic Importance: Annona senegalensisPers.

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Agricultural Sciences 2021年第4期12卷 370-386页

作者： Oumar Ba Abraham Diémé Mame Ourèye Sy Laboratoire Campus de Biotechnologies Végétales Département de Biologie Végétale Faculté des Sciences & Techniques Université Cheikh Anta Diop Dakar Sénégal

Annona senegalensis (Pers.) or Annone from Senegal is a species found in the West African savannah and para-littoral sands. It offers real possibilities of socio-economic use, particularly in the medical, nutritional, ecosystem conservation and poverty alleviation fields. However, this wild species remained not fully exploited despite its potentialities. As a result, there is a need to regenerate this species;therefore, the in vitro propagation from adult material was undertaken. For this purpose, axillary nodes from plant regrowth taken from elderly subjects were aseptically introduced into different media enriched or not with phytohormones. Among the 3 culture media tested, that of Murashige and Skoog (MS, 1962) was the most reactive and made it possible to develop a micropropagation protocol for adult material of A. senegalensis. Thus, the introduction of these explants in media containing cytokinins (BAP and Kinetin) significantly increased the reactivity compared to media without hormones. If the best average numbers of shoots (2.3) and nodes (5.3) are obtained in MS + BAP 2 mg·L−1, with a reactivity of 91.66%, the addition of 0.1 mg·L−1 NAA gave the best average length (8.25 cm) of vitroplants. An induction time of 3 days into darkness with IBA at 50 mg·L

In VitroClonal Propagation from Juvenile and Different Explant Types of Two Edible AnnonaceaeSpecies: Annona muricataL. and Annona squamosaL.

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Advances in Bioscience and Biotechnology 2021年第12期12卷 458-480页

作者： Oumar Ba Abraham Dieme Amadou Lamine Ndoye Mame Ourèye Sy Laboratoire Campus de Biotechnologies Vegetales Departement de Biologie Vegetale Faculte des Sciences & Techniques Universite Cheikh Anta Diop Dakar Senegal Laboratoire Mixte International-Adaptation des Plantes et Microorganismes associes aux Stress Environnementaux (LMI-LAPSE) IRD ISRA UCAD Dakar Senegal

Annona muricata L. and Annona squamosa L. are tropical species whose fleshy fruit is edible. They offer real possibilities for socio-economic use, particularly in the fields of medicine, nutrition, ecosystem conservation and the poverty alleviation. This study was set up to evaluate different methods of micropropagation from juvenile material for the regeneration of these species. Thus, MS medium supplemented with [BAP 2 mg·L-1] i.e. M2 produced 2.87 newly formed shoots from the cotyledonary nodes of A. muricata. For the terminal apices of A. squamosa, it was MMS medium supplemented with [BAP 2 mg·L-1] i.e. MM2 that was most conducive to new shoot formation (3.12). The addition of 0.1 and 0.2 mg·L-1 of NAA in the M2 medium, made it possible to have the best elongations and average number of nodes for the new shoots from cotyledonary nodes of A. muricata (9.11 cm for 5.62 nodes). With A. squamosa, MM7 medium [MMS + BAP 1 mg·L-1 + KIN 1 mg·L-1] resulted in an average length of 9.05 cm with 5.62 nodes on average for the apical shoots. A 3-day rhizogenic induction period in the dark with [IBA 50 mg·L-1] and 2 g·L-1 of activated charcoal gave a rooting rate of 66.67% for shoots originating from the cotyledonary nodes of A. squamosa;while with vitroplants from cotyledonary nodes of A. muricata, a better rooting rate (83.33%) was obtained following a 5-day rhizogenic induction. After 30 days of acclimatization, the survival rate reached 83.33% for plants from the tips of A. muricata, whe

关键词： Annona muricata Annona squamosa Juvenile Material Micropropagation 6-Benzylaminopurine 6-Furfuryl Aminopurine 1-Naphthaleneacetic acid indole-3-butyric acid

Micropropagation from Juvenile Material of Annona senegalensis Pers.

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Agricultural Sciences 2022年第3期13卷 448-466页

作者： Oumar Ba Amadou Lamine Ndoye Abraham Dieme Mame Ourèye Sy Laboratoire Campus de Biotechnologies Végétales Département de Biologie Végétale Faculté des Sciences & Techniques Université Cheikh Anta Diop Dakar Sénégal Laboratoire Mixte International-Adaptation des Plantes et Microorganismes associes aux Stress Environnementaux (LMI-LAPSE) IRD ISRA UCAD Dakar Sénégal

Annona senegalensis is a savannah species present in the wild in tropical and sub-tropical African regions. It is used by the local populations for its many economic, pharmacological, nutritional and ecological interests. However, the strong pressure exerted on this species as well as the increasing degradation of the ecosystems, in which it evolves, seriously compromise its sustainability and development. Conventional methods of vegetative propagation are not sufficient to ensure its durable regeneration and the renewal of endemic populations in Senegal. In this context, it was undertaken in vitro propagation, from 30 days old juvenile seedlings. Thus, axillary, cotyledonary and apical nodes were in vitro cultured in Murashige and Skoog (1962) medium (MS), with different concentrations of cytokinins and/or auxins. BAP used alone at 2 mg•L−1 proved to be more beneficial for micropropagation of different types of explants compared to Kinetin used alone or in combination with BAP, especially for axillary and cotyledonary nodes. The BAP-NAA combination allowed to have a better elongation of newly formed shoots. For shoots of apical and cotyledonary nodes origin, a rhizogenic induction of 5 days, with IBA at 25 mg•L−1, resulted in a better rooting rate with, respectively, 75% (for 2.22 roots) and 66.67% (for 4.17 roots). For newly formed shoots of axillary origin, a 24-hour rooting induction with IBA at 50 mg•L−1 gave a rooting rate of 58.33% (for 2.4 roots). After 30 days of acclimatization, the survival rate was 75% for the young plants from the apices and 83.33% for those originating from the cotyledonary and axillary nodes. This protocol can therefore be adopted for the in vitro clonal propagation of A. senegalensis juvenile material.

关键词： Annona senegalensis Micropropagation Juvenile Material 6-Benzylaminopurine 1-Naphthaleneacetic acid indole-3-butyric acid