Shoot tip necrosis of in vitro plant cultures: a reappraisal of possible causes and solutions.
Boron
Calcium
Chloride
In vitro shoots
Mineral nutrient deficiency
Physiological disorder
Plant growth regulators
Journal
Planta
ISSN: 1432-2048
Titre abrégé: Planta
Pays: Germany
ID NLM: 1250576
Informations de publication
Date de publication:
03 Sep 2020
03 Sep 2020
Historique:
received:
19
03
2020
accepted:
27
08
2020
entrez:
5
9
2020
pubmed:
5
9
2020
medline:
16
2
2021
Statut:
epublish
Résumé
Shoot tip necrosis is a physiological condition that negatively impacts the growth and development of in vitro plant shoot cultures across a wide range of species. Shoot tip necrosis is a physiological condition and disorder that can arise in plantlets or shoots in vitro that results in death of the shoot tip. This condition, which can spread basipetally and affect the emergence of axillary shoots from buds lower down the stem, is due to the cessation of apical dominance. STN can occur at both shoot multiplication and rooting stages. One of the most common factors that cause STN is nutrient deficiency or imbalance. Moreover, the presence or absence of plant growth regulators (auxins or cytokinins) at specific developmental stages may impact STN. The cytokinin to auxin ratio within an in vitro plant can be modified by varying the concentration of cytokinins used in the culture medium. The supply of nutrients to in vitro shoots or plantlets might also affect their hormonal balance, thus modifying the occurrence of STN. High relative humidity within culture vessels and hyperhydricity are associated with STN. An adequate supply of calcium as the divalent cation (Ca
Identifiants
pubmed: 32885282
doi: 10.1007/s00425-020-03449-4
pii: 10.1007/s00425-020-03449-4
pmc: PMC7471112
doi:
Substances chimiques
Antioxidants
0
Culture Media
0
Plant Growth Regulators
0
Nitrogen
N762921K75
Boron
N9E3X5056Q
Calcium
SY7Q814VUP
Types de publication
Journal Article
Review
Langues
eng
Sous-ensembles de citation
IM
Pagination
47Subventions
Organisme : Xunta de Galicia
ID : ED431E-2018/07
Organisme : Higher Education Institutional Excellence Programme
ID : NKFIH-1150-6/2019
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