Functional Analysis of and Related to Floral Terpenoids Biosynthesis in Tree Peony.

Tree peony (), as a popular ornamental plant worldwide, has a unique floral fragrance, and it is important in the pollination, ornamental, food, and fragrance product industries. However, the underlying molecular mechanisms for the synthesis of floral fragrance terpenoids in tree peony are not well understood, constraining their exploitation. 'Oukan' produces strong floral fragrance terpenoids with high ornamental value and excellent stress resistance and is considered a valuable model for studying tree peony floral fragrance formation.

LiMYB108 is involved in floral monoterpene biosynthesis induced by light intensity in Lilium 'Siberia'.

We find that the MYB family transcription factor, LiMYB108, has a novel function to regulate the floral fragrance affected by light intensity. Floral fragrance determines the commercial value of flowers and is influenced by many environmental factors, especially light intensity. However, the mechanism by which light intensity affects the release of floral fragrance is unclear.

Chromosome-scale genome assembly and insights into the metabolome and gene regulation of leaf color transition in an important oak species, Quercus dentata.

Quercus dentata Thunb., a dominant forest tree species in northern China, has significant ecological and ornamental value due to its adaptability and beautiful autumn coloration, with color changes from green to yellow into red resulting from the autumnal shifts in leaf pigmentation. However, the key genes and molecular regulatory mechanisms for leaf color transition remain to be investigated.

[Ectomycorrhizal fungi enhance salt tolerance of by regulating ion balance].

We explored the effects of salt stress on the growth of and the effects of ectomycorrhizal fungi (ECMF) on the ion balance of . After inoculating four kinds of ECMFs (, , , ) on seedlings, we treated the annual non-mycorrhizated and mycorrhizated seedlings with NaCl stress (0, 100, 200, 300 mmol·L) for 36 days, and then analyzed the mycorrhizal characteristics, growth, leaf injury symptoms, leaf electrolyte permeability, water content, and ion contents in roots, stems, and leaves. The results showed that the four ECMFs could establish a symbiotic system with , and that root system of mycorrhizal seedlings was stronger than that of non-mycorrhizal seedlings.

Transcriptome analysis identifies key gene involved in monoterpene biosynthesis in 'Siberia'.

is a popular cut flower that is highly favored by consumers due to its snowy white color and strong fragrance, which originates from the release of monoterpenes. However, the underlying molecular mechanism of monoterpene synthesis remains poorly understood. In this study, the content of three main monoterpenes (linalool, ocimene, and myrcene) was examined in 'Siberia', and RNA sequencing of the 11 stages of flower development was conducted.

Lilac (Syringa oblata) genome provides insights into its evolution and molecular mechanism of petal color change.

Color change during flower opening is common; however, little is understood on the biochemical and molecular basis related. Lilac (Syringa oblata), a well-known woody ornamental plant with obvious petal color changes, is an ideal model. Here, we presented chromosome-scale genome assembly for lilac, resolved the flavonoids metabolism, and identified key genes and potential regulatory networks related to petal color change.

Ectomycorrhizal Inoculation Enhances the Salt Tolerance of Seedlings.

Salt stress harms the growth and development of plants, and the degree of soil salinization in North China is becoming increasingly severe. Ectomycorrhiza (ECM) is a symbiotic system formed by fungi and plants that can improve the growth and salt tolerance of plants. No studies to date have examined the salt tolerance of , a typical ectomycorrhizal tree species of temperate forests in the northern hemisphere.

[Influences of municipal sludge applied in slope vegetation restoration on surface water environment].

The application of municipal sludge in ecological restoration has a good prospect for avoiding the food chain of grain crops, but its influences on surface water environmental are unclear. The municipal sludge and construction waste were mixed with 1:1 (V/V) as growth media, which were covered over simulation coal gangue slopes. Eight native woody species were sowed in the mixed media.