Page 12 - 《广西植物》2023年第9期
P. 12
1 5 6 0 广 西 植 物 43 卷
表 1 ABA 生物合成、信号转导及其种子成熟转录因子在种子发育中的功能
Table 1 Functions of ABA biosynthesisꎬ signaling and transcription factors involved in maturation in seed development
基因 / 转录因子 功能描述 参考文献
Gene / transcription factor Function description Reference
储藏物积累 Accumulation of storage product
SnRK2.6 活性失活导致种子含油量降低ꎬ过表达增加整个种子的重量 Zheng et al.ꎬ 2010
Inactivation of SnRK2. 6 results in reduction of seed oil contentꎬ while overexpression of
SnRK2.6 increases overall seed products
PYLꎬ SnRK2 基因突变通常表现出种子储藏物减少ꎬ如 12S 球蛋白 Zheng et al.ꎬ 2010ꎻ
Mutations in PYL and SnRK2 often exhibit a reduced seed storage productsꎬ such as Zhao et al.ꎬ 2018
12S globulin
LEC1 通过与 bZIP67 直接相互作用激活菜籽蛋白 C 基因 Yamamoto et al.ꎬ 2010
LEC1 activates Cruciferin C via a direct interaction with bZIP67
LEC2 通过激活编码油体蛋白的基因 OLE1 和编码 2S 和 12S 储藏蛋白的基因的表达来调控 Braybrook et al.ꎬ 2006
油和蛋白的积累
LEC2 regulates oil and protein accumulation by activating the expressions of OLE1ꎬ oleosin
and genes encoding 2S and 12S storage proteins
FUS3 负调控 TTG1 的表达ꎬ正调控 WRI 的表达 Muet al.ꎬ 2008ꎻ
The expressions of TTG1 and WRI1 are regulated by FUS3 negatively and Chen et al.ꎬ 2015
positivelyꎬ respectively
LEC1ꎬ FUS3 以 ABA 依赖的方式控制 ABI3 的积累ꎬ并相互作用调控储藏蛋白的积累、花青素的合成 Mu et al.ꎬ 2008ꎻ
以及叶绿素和脂质的积累 Zhang et al.ꎬ 2016
LEC1 and FUS3 control the accumulation of ABI3 and function with each other to regulate the
accumulation of storage proteinsꎬ anthocyanin synthesisꎬ and accumulation of chlorophyll and
lipid in an ABA ̄dependent manner
LEC2ꎬ FUS3 FUS3 与 LEC2 结合来诱导 WRI1 的表达ꎻWRI1 编码 AP2 转录因子ꎬ并通过增加脂肪酸 Yamamoto et al.ꎬ 2010
合成和糖降解基因的表达来调控含糖量和含油量
FUS3ꎬ in combination with LEC2ꎬ induces the expression of WRI1ꎬ which encodes AP2
transcription factor and regulates sugar and oil contents by increasing the gene expression for
fatty acid synthesis and sugar degradation
TTG1 TTG1 编码一种抑制种子储藏蛋白( SSPs) 和油积累的转录因子ꎬ突变体 ttg1 的特征是 Baud et al.ꎬ 2008ꎻ
储藏物显著增加ꎬ如油和 SSP Chen et al.ꎬ 2015
TTG1 encodes a transcription factor that suppresses the accumulation of seed storage proteins
( SSPs) and oils. Mutant ttg1 is characterized by a dramatic increase in storage reservesꎬ such
as oils and SSPs
耐脱水性 Desiccation tolerance
ABI3ꎬ ABI4ꎬ ABI5 ABI3ꎬ ABI4ꎬ ABI5 调控种子耐脱水性的获得ꎬ控制与棉子糖家族寡糖的代谢和 LEA 蛋 Zinsmeister et al.ꎬ 2016
白合成有关的基因
ABI3ꎬ ABI4ꎬ and ABI5 regulate acquisition of desiccation tolerance and control genes involved
in raffinose family oligosaccharide metabolism and LEA proteins synthesis
LEC1ꎬ ABI3ꎬ FUS3 LEC1ꎬ ABI3ꎬ FUS3 基因突变显著地影响种子的耐脱水性 Roscoe et al.ꎬ 2015
Mutations of LEC1ꎬ ABI3 and FUS3 significantly affect the desiccation tolerance of the seeds
bZIP67ꎬ ERF12 负或正控制 DOG1 的表达 Bryant et al.ꎬ 2019ꎻ
The expression of DOG1 gene is controlled by bZIP67 and RF12 negatively or Li et al.ꎬ 2019
positivelyꎬ respectively
LEC2 通过诱导 EEL bZIP 转录因子的基因表达来影响 LEA、EM1 和 EM6 基因的表达 Bentsink et al.ꎬ 2006
LEC2 affects the expression of LEAꎬ EM1 and EM6 genes by inducing the expression of the
gene for ENHANCED EM LEVEL (EEL) bZIP
EEL bZIP EM 蛋白的负调控因子 Braybrook et al.ꎬ 2006
A negative regulator of the EM (early methionine) proteins
种子初生休眠的诱导和维持 Induction and maintenance of primary seed dormancy
AtNCED6 / AtNCED6 和 AtNCED9 突变体的成熟干燥种子表现出 ABA 水平和休眠程度降低 Lefebvre et al.ꎬ 2006
AtNCED9 Mutants of AtNCED6 and AtNCED9 show a decreased ABA level and dormancy in mature
dry seeds
PvNCED1 在吸胀的烟草种子中 PvNCED1 异位表达和过表达增加 ABA 水平ꎬ引起种子萌发延迟 Ali et al.ꎬ 2022
Ectopic expression and overexpression of PvNCED1 in imbibed tobacco seeds increased ABA
levelꎬ resulting in delayed germination of seeds