The Arabidopsis mature endosperm promotes seedling cuticle formation via release of sulfated peptides

被引：25

作者：

De Giorgi, Julien ^{[1
]}

Fuchs, Christelle ^{[1
]}

Iwasaki, Mayumi ^{[1
]}

Kim, Woohyun ^{[1
]}

Piskurewicz, Urszula ^{[1
]}

Gully, Kay ^{[2
]}

Utz-Pugin, Anne ^{[1
]}

Mene-Saffrane, Laurent ^{[3
]}

Waridel, Patrice ^{[4
]}

Nawrath, Christiane ^{[2
]}

Longoni, Fiamma Paolo ^{[1
,6
]}

Fujita, Satoshi ^{[2
,7
]}

Loubery, Sylvain ^{[1
]}

Lopez-Molina, Luis ^{[1
,5
]}

机构：

[1] Univ Geneva, Dept Bot & Plant Biol, Geneva, Switzerland

[2] Univ Lausanne, Dept Plant Mol Biol, Lausanne, Switzerland

[3] Univ Fribourg, Dept Biol, CH-1700 Fribourg, Switzerland

[4] Univ Lausanne, Prot Anal Facil, Lausanne, Switzerland

[5] Univ Geneva, Inst Genet & Genom Geneva iGE3, Geneva, Switzerland

[6] Univ Neuchatel, Fac Sci, Inst Biol, Lab Plant Physiol, Neuchatel, Switzerland

[7] Natl Inst Genet NIG, Yata 1111, Mishima, Shizuoka 4118540, Japan

来源：

DEVELOPMENTAL CELL | 2021年 / 56卷 / 22期

基金：

瑞士国家科学基金会;

关键词：

ABSCISIC-ACID; LIPID MOBILIZATION; ABIOTIC STRESS; LEAF CUTICLE; GERMINATION; FLUORESCENCE; GROWTH; IDENTIFICATION; BIOSYNTHESIS; REVEALS;

D O I：

10.1016/j.devcel.2021.10.005

中图分类号：

Q2 [细胞生物学];

学科分类号：

071009 ; 090102 ;

摘要：

In Arabidopsis mature seeds, the onset of the embryo-to-seedling transition is nonautonomously controlled, being blocked by endospermic abscisic acid (ABA) release under unfavorable conditions. Whether the mature endosperm governs additional nonautonomous developmental processes during this transition is unknown. Mature embryos have a more permeable cuticle than seedlings, consistent with their endospermic ABA uptake capability. Seedlings acquire their well-sealing cuticles adapted to aerial lifestyle during germination. Endosperm removal prevents seedling cuticle formation, and seed reconstitution by endosperm grafting onto embryos shows that the endosperm promotes seedling cuticle development. Grafting different endosperm and embryo mutant combinations, together with biochemical, microscopy, and mass spectrometry approaches, reveal that the release of tyrosylprotein sulfotransferase (TPST)-sulfated CIF2 and PSY1 peptides from the endosperm promotes seedling cuticle development. Endosperm-deprived embryos produced nonviable seedlings bearing numerous developmental defects, not related to embryo malnutrition, all restored by exogenously provided endosperm. Hence, seedling establishment is nonautonomous, requiring the mature endosperm.

引用

页码：3066 / +

页数：22

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