In order to reduce the browning phenomenon of Quercus mongolica during tissue culture, it was clarified whether the browning was related to the production of antioxidant enzyme system and phenolic substances. Mature zygotic embryos of Q. mongolica were used as materials, and the regeneration plant system of Q. mongolica was optimized by tissue culture technology to obtain regenerated plants. The effects of PVP on the physiological and biochemical indexes of zygotic embryo germination of Q. mongolica were investigated. The results indicated that PVP 40 had the best effect on inhibiting browning (40 represents the average molecular weight range of PVP). The highest induction rate of adventitious buds was 71.17% when 0.2 g/L PVP 40 was added. The bud proliferation coefficient was 3.90, the rooting rate was 40.37%, and the transplanting survival rate was 73%. PVP reduced the activity of antioxidant enzymes, polyphenol oxidase and total phenolase activity of Quercus mongolica explants, and effectively inhibited browning. This study effectively reduced the browning effect of tissue culture of Q. mongolica and no longer aggravated the browning inhibition, optimized the organ regeneration plant system of Q. mongolica, and analyzed the internal physiological mechanism of PVP inhibition browning treatment on the germination of zygotic embryos of Q. mongolica, so as to provide reference for other species of Q. mongolica to inhibit browning.
LIY, PANL B, ZHAOW,et al.Functional trait variation characteristics and influencing factors of Quercus mongolica leaf[J].Journal of Northeast Forestry University,2024,52(3):10-15.
[3]
LIX M, JIANGM, RENY C,et al.Growth,physiological,and transcriptome analyses reveal Mongolian oak seedling responses to shading[J].Forests,2024,15(3):538.
[4]
WANGL M, DUX F, YUED M,et al.Catechin,rutin and quercetin in Quercus mongolica Fisch leaves exert inhibitory effects on multiple cancer cells[J].Journal of food biochemistry,2022,46(12):e14486.
LIANGX M, QUY C, MEIM,et al.Changes in endogenous hormone content and cellular structure during seed storage of Quercus mongolica [J].Journal of Central South University of Forestry and Technology,2024,44(4):1-8.
YUY, LANGQ L, LIL F,et al.Study on early growth traits of seedlings and tissue culture seedlings Quercus acutissima [J].Journal of Shenyang Agricultural University,2023,54(5):613-618.
ZHANGW, RENY, ZHUJ L,et al.Embryo proliferation and maturation culture of Quercus variabilis Blume var.pyramidalis [J].Journal of Central South University of Forestry & Technology,2024,44(4):58-65.
[11]
刘禹含.北美红栎无性繁殖技术研究[D].沈阳:沈阳农业大学,2023.
[12]
LIUY H.Study on vegetative propagation technology of Quercus rubra[D].Shenyang: Shenyang Agricultural University,2023.
[13]
MARTINEZT M, JOSES C M, VIEIYEZM A,et al.Propagation of mature Quercus ilex L.(holm oak) trees by somatic embryogenesis[J].Plant Cell,Tissue and Organ Culture (PCTOC),2017,131(2):321-333.
[14]
SANGITAB, K.SMANOJ, PARAMPARAJ,et al.An efficient direct organogenesis protocol for in vitro clonal propagation of Rubia cordifolia L.[J].Industrial Crops and Products,2024,208:117856.
[15]
LIUC, FANX, QINB,et al.Low temperature and dark culture inhibited explant browning and promoted in vitro regeneration of Juglans mandshurica [J].In Vitro Cellular & Developmental Biology-Plant,2024,60(4):487-495.
[16]
ZHAOS G, WANGH X, LIUK,et al.The role of JrPPOs in the browning of walnut explants[J].BMC Plant Biology,2021,21(1):9.
[17]
CHAIMAEM, FATIMAH, NEZHAB,et al.Micropropagation of Quercus spp.,complications and solutions-an overview[J].In Vitro Cellular & Developmental Biology-Plant,2023,59(4):446-460.
WENS S, CUIH Y, SUNX Y,et al.Effect of subculture cycle on in vitro adventitious rooting of Paeonia×lemoinei ‘High Noon’ and related physiological indexes[J].Journal of Northwest A&F University(Natural Science Edition),2024,52(5):124-132,143.
WANGY, GUOW H, SHENH L,et al.Effects of low temperature treatment on the physiological mechanisms of embryogenic callus induction in Pinus koraiensis [J].Journal of Northeast Forestry University,2024,52(9):13-18.
LIUX H, WANGY F, LYUW J,et al.Optimization of rooting culture system of Chrysanthemummorifolium tissue culture seedlings based on orthogonal experiment[J].Plant Physiology Journal,2023,59(4):782-791.
YANGX G.Effect analysis of adventitious buds of Juglans mandshurica under different treatments[J].Protection Forest Science and Technology,2021(5):43-44,51.
[30]
NUNESS, SOUSAD, PEREIRAT V,et al.Efficient protocol for in vitro mass micropropagation of slash pine[J].In Vitro Cellular & Developmental Biology-Plant,2018,54(2):175-183.
LIANGY, ZHAOX Y, BAIX,et al.Effects of PVP treatments on phenolic contents and enzyme activities in explants of Pinus tabulaeformis var.mukdensis [J].Scientia Silvae Sinicae,2021,57(10):166-174.
CHANGE M, JIANGZ P, LIUJ F,et al.Establishment of tissue culture system of the ancient trees of Platycladus orientalis [J].Forestr Research,2023,36(4):41-49.
WANGJ, FANGS Z.Effects of different anti-browning agents on enzyme activity and growth in callus of Cyclocarya paliurus [J].Journal of Nanjing Forestry University:Natural Science Edition,2023,47(6):167-174.
XIAOJ Y, WANGL J.Effects of five anti-browning agents on the induction and differentiation of strawberry shoot tips[J/OL].Molecular Plant Breeding,1-14[2024-10-14].
[43]
XUX R, ZHUD M, HUANZ Q,et al.Mechanisms of tissue culture browning in five Magnoliaceae family species[J].Plant Cell,Tissue and Organ Culture (PCTOC),2023,155(1):183-195.