A polypeptide for bioactive priming of a plant or a plant part to increase growth, yield, health, longevity, productivity, and/or vigor of a plant or a plant part and/or decrease abiotic stress in the plant or the plant part and/or protect the plant or the plant part from disease, insects and/or nematodes, and/or increase the innate immune response of the plant or the plant part and/or change plant architecture, wherein the polypeptide comprises:
- (a) a flagellin or flagellin-associated polypeptide and an amino acid sequence of the flagellin or flagellin-associated polypeptide comprises any one of SEQ ID NOs:
- 226, 1-225, 227-375, 526, 528, 530, 532, 534, 536, 538, 540, 541, 751, 752, and 754-766;
- or
- (b) a mutant flagellin or flagellin-associated polypeptide and an amino acid sequence of the mutant flagellin or flagellin-associated polypeptide comprises any one of SEQ ID NOs:
- 571-579, and 753;
- or
- (c) a mutant flagellin or flagellin-associated polypeptide and an amino acid sequence of the mutant flagellin or flagellin-associated polypeptide comprises any one of SEQ ID NOs:
- 580-586;
- or
- (d) a retro inverso Flg22 polypeptide and an amino acid sequence of the retro inverso Flg22 polypeptide comprises any one of SEQ ID NOs:
- 376-450, 527, 531, 533, 535, 537 and 539;
- or
- (e) a retro inverso FlgII-28 polypeptide and an amino acid sequence of the retro inverso FlgII-28 polypeptide comprises any one of SEQ ID NOs:
- 451-525, or 768;
- or
- (f) a retro inverso Flg15 polypeptide and an amino acid sequence of the retro inverso Flg15 polypeptide comprises SEQ ID NOs:
- 529 or 767;
- or
- (g) a harpin or harpin-like polypeptide and an amino acid sequence of the harpin or harpin-like polypeptide comprises any one of SEQ ID NOs:
- 587, 589, 591, 593, 594 and 595;
- or
- (h) a retro inverso harpin or harpin-like polypeptide and an amino acid sequence of the retro inverso harpin or harpin-like polypeptide comprises any one of SEQ ID NOs:
- 588, 590, 592, 596 and 597;
- or
- (i) a root hair promoting polypeptide (RHPP) and an amino acid sequence of the RHPP comprises any one of SEQ ID Nos:
- 600, 603 and 604;
- or
- (j) a Kunitz Trypsin Inhibitor (KTI) polypeptide and an amino acid sequence of the KTI polypeptide comprises SEQ ID No:
- 602;
- or
- (k) a retro inverso root hair promoting polypeptide (RI RHPP) and an amino acid sequence of the RI RHPP comprises any one of SEQ ID NO:
- 601, 605 and 606;
- or
- (l) an elongation factor Tu (EF-Tu) polypeptide and an amino acid sequence of the EF-Tu polypeptide comprises any one of SEQ ID NOs:
- 607-623;
- or
- (m) a retro inverso elongation factor Tu (RI EF-Tu) polypeptide and an amino acid sequence of the RI EF-Tu polypeptide comprises any one of SEQ ID NOs:
- 624-640;
- or
- (n) a fusion polypeptide comprising SEQ ID NO:
- 750;
- or
- (o) a phytosulfokine (PSK) polypeptide and an amino acid sequence of the PSK polypeptide comprises SEQ ID NO:
- 598;
- or
- (p) a retro inverso phytosulfokine (RI PSK) polypeptide and an amino acid sequence of the RI PSK polypeptide comprises SEQ ID NO:
- 599;
- or
- (q) a thionin or thionin-like polypeptide and an amino acid sequence of the thionin or thionin-like polypeptide comprises any one of SEQ ID NOs:
- 650-749, and
- optionally, wherein the flagellin or flagellin-associated polypeptide of (a), the mutant flagellin or flagellin-associated polypeptide of (c), the harpin or harpin-like polypeptide of (g), the KTI polypeptide of (j), the PSK polypeptide of (o), and the thionin or thionin-like polypeptide of (q) either:
- contains a chemical modification;
- is a variant having an amino acid insertion, deletion, inversion, repeat, duplication, extension, or substitution within the amino acid;
- is part of a fusion protein;
- or contains a protease recognition sequence.